Q. If the equation 2x + 3y = 12 is transformed into slope-intercept form, what is the slope of the line? (2023)
A.
2
B.
-2
C.
3/2
D.
-3/2
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Solution
Rearranging the equation into slope-intercept form (y = mx + b) gives y = -2/3x + 4, where the slope (m) is -2/3.
Correct Answer:
D
— -3/2
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Q. If the equation 2x + 3y = 6 is transformed into slope-intercept form, what is the slope of the line?
A.
-2
B.
2
C.
-3/2
D.
3/2
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Solution
Rearranging the equation to y = -2/3x + 2 shows that the slope is -2/3.
Correct Answer:
C
— -3/2
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Q. If the equation 2x - 3 = 7 is solved for x, what is the solution?
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Solution
Adding 3 to both sides gives 2x = 10, and dividing by 2 gives x = 5.
Correct Answer:
B
— 5
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Q. If the equation of a line is given as 2x + 3y = 6, what is the value of y when x = 0?
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Solution
Substituting x = 0 into the equation 2(0) + 3y = 6 gives 3y = 6, thus y = 2.
Correct Answer:
B
— 2
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Q. If the equation of a line is given as 2x - 3y + 6 = 0, what is the y-intercept of the line?
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Solution
To find the y-intercept, set x = 0. The equation becomes -3y + 6 = 0, leading to y = 2.
Correct Answer:
B
— 2
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Q. If the equation of a line is given as 3x - 4y + 12 = 0, what is the y-intercept of the line?
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Solution
To find the y-intercept, set x = 0. The equation becomes -4y + 12 = 0, leading to y = 3.
Correct Answer:
A
— 3
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Q. If the equation of a line is given as 4x - y = 8, what is the y-intercept of the line?
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Solution
Rearranging to y = 4x - 8 shows that the y-intercept is -8.
Correct Answer:
B
— 4
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Q. If the equation of a line is given as y = mx + b, what does 'm' represent?
A.
The y-intercept
B.
The x-intercept
C.
The slope of the line
D.
The constant term
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Solution
'm' represents the slope of the line in the slope-intercept form of a linear equation.
Correct Answer:
C
— The slope of the line
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Q. If the equation of a line is y = -1/2x + 3, what is the x-intercept?
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Solution
To find the x-intercept, set y = 0. The equation becomes 0 = -1/2x + 3, leading to x = 6.
Correct Answer:
A
— 6
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Q. If the equation of a line is y = -1/2x + 3, what is the y-value when x = 4?
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Solution
Substituting x = 4 into the equation gives y = -1/2(4) + 3 = -2 + 3 = 1.
Correct Answer:
B
— 2
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Q. If the equation of a line is y = -2x + 5, what is the x-intercept?
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Solution
To find the x-intercept, set y = 0: 0 = -2x + 5, which gives x = 2.5.
Correct Answer:
A
— 2.5
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Q. If the equation of a line is y = mx + c, what does 'm' represent?
A.
The y-intercept
B.
The slope
C.
The x-intercept
D.
The distance
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Solution
'm' in the equation of a line represents the slope, which indicates the steepness and direction of the line.
Correct Answer:
B
— The slope
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Q. If the expansion of (x + y)^5 is written out, which term corresponds to x^3y^2?
A.
The 3rd term
B.
The 4th term
C.
The 5th term
D.
The 6th term
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Solution
In the expansion of (x + y)^5, the term x^3y^2 corresponds to the 4th term, calculated using the formula C(5, 2)x^3y^2.
Correct Answer:
B
— The 4th term
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Q. If the expansion of (x + y)^n contains a term with x^4y^2, what can be inferred about the value of n?
A.
n must be 6.
B.
n must be greater than 6.
C.
n must be less than 6.
D.
n can be any integer.
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Solution
In the term x^4y^2, the sum of the exponents (4 + 2) must equal n, hence n = 6.
Correct Answer:
A
— n must be 6.
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Q. If the expansion of (x + y)^n contains a term with x^4y^3, what can be inferred about n?
A.
n must be 7.
B.
n must be greater than 7.
C.
n must be less than 7.
D.
n can be any integer.
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Solution
The sum of the exponents in the term x^4y^3 is 4 + 3 = 7, hence n must be 7.
Correct Answer:
A
— n must be 7.
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Q. If the expression 3x + 5 = 20 is solved for x, what is the value of x?
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Solution
To solve for x, subtract 5 from both sides to get 3x = 15, then divide by 3 to find x = 5.
Correct Answer:
A
— 5
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Q. If the exterior angle of a regular polygon is 30 degrees, how many sides does it have?
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Solution
The sum of the exterior angles of any polygon is 360 degrees. Therefore, the number of sides can be calculated as 360 / 30 = 12.
Correct Answer:
B
— 12
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Q. If the exterior angle of a triangle is 120 degrees, what is the measure of the smallest interior angle?
A.
30 degrees
B.
40 degrees
C.
60 degrees
D.
80 degrees
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Solution
The exterior angle is equal to the sum of the two opposite interior angles. If the exterior angle is 120 degrees, the smallest interior angle can be calculated as 180 - 120 = 60 degrees.
Correct Answer:
D
— 80 degrees
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Q. If the first sentence of the paragraph is removed, what effect would it have on the overall meaning? (2023)
A.
It would enhance clarity.
B.
It would create confusion.
C.
It would have no effect.
D.
It would weaken the argument.
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Solution
Removing the first sentence would eliminate important context, weakening the argument presented.
Correct Answer:
D
— It would weaken the argument.
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Q. If the first sentence of the passage is rearranged to the end, which of the following would be the most logical order of the remaining sentences? (2023)
A.
3, 1, 2, 4
B.
2, 4, 3, 1
C.
4, 3, 1, 2
D.
1, 2, 4, 3
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Solution
Rearranging the sentences in the order of 2, 4, 3, 1 maintains a logical flow, building on the ideas presented before concluding with the initial statement.
Correct Answer:
B
— 2, 4, 3, 1
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Q. If the first term of a geometric progression is 7 and the common ratio is 1/2, what is the sum of the first 5 terms?
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Solution
The sum of the first n terms of a GP is given by S_n = a(1 - r^n) / (1 - r). Here, S_5 = 7(1 - (1/2)^5) / (1 - 1/2) = 7(1 - 1/32) / (1/2) = 7 * 31/32 * 2 = 14.
Correct Answer:
B
— 21
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Q. If the first term of a geometric progression is x and the common ratio is 1/2, what is the sum of the first 5 terms?
A.
x
B.
x/2
C.
x/3
D.
x(1 - (1/2)^5)/(1 - 1/2)
Show solution
Solution
The sum of the first n terms of a GP is given by S_n = a(1 - r^n) / (1 - r). Here, S_5 = x(1 - (1/2)^5) / (1 - 1/2) = x(1 - 1/32) / (1/2) = x(31/32) * 2 = x(62/32).
Correct Answer:
D
— x(1 - (1/2)^5)/(1 - 1/2)
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Q. If the first term of a geometric progression is x and the common ratio is 3, which of the following represents the 6th term?
A.
x * 3^5
B.
x * 3^6
C.
3 * x^5
D.
3 * x^6
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Solution
The nth term of a GP is given by a * r^(n-1). Here, the 6th term = x * 3^(6-1) = x * 3^5.
Correct Answer:
A
— x * 3^5
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Q. If the first term of a GP is 10 and the common ratio is 0.5, what is the sum of the first 5 terms?
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Solution
The sum of the first n terms of a GP is given by S_n = a(1 - r^n) / (1 - r). Here, S_5 = 10(1 - 0.5^5) / (1 - 0.5) = 10(1 - 0.03125) / 0.5 = 10 * 0.96875 / 0.5 = 19.375, which rounds to 20.
Correct Answer:
B
— 20
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Q. If the first term of a GP is 10 and the sum of the first three terms is 70, what is the common ratio?
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Solution
Let the common ratio be r. The sum is 10 + 10r + 10r^2 = 70. Simplifying gives r^2 + r - 6 = 0, which factors to (r - 2)(r + 3) = 0, thus r = 2.
Correct Answer:
B
— 3
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Q. If the first term of a GP is 4 and the common ratio is 1/3, what is the sum of the first three terms?
A.
4.5
B.
5.5
C.
6
D.
6.5
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Solution
The first three terms are 4, 4/3, and 4/9. Their sum is 4 + 4/3 + 4/9 = 4 + 1.33 + 0.44 = 5.77.
Correct Answer:
A
— 4.5
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Q. If the first term of a GP is 4 and the common ratio is 3, what is the product of the first three terms?
A.
144
B.
108
C.
81
D.
64
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Solution
The first three terms are 4, 12, and 36. Their product = 4 * 12 * 36 = 1728.
Correct Answer:
A
— 144
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Q. If the first term of a GP is 7 and the common ratio is 3, what is the 6th term?
A.
567
B.
729
C.
243
D.
81
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Solution
The 6th term is given by 7 * 3^(6-1) = 7 * 243 = 1701.
Correct Answer:
B
— 729
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Q. If the first term of a GP is x and the common ratio is y, which of the following represents the 4th term?
A.
xy^3
B.
x^3y
C.
x^4y
D.
xy^4
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Solution
The nth term of a GP is given by a * r^(n-1). Thus, the 4th term is x * y^(4-1) = xy^3.
Correct Answer:
A
— xy^3
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Q. If the first term of a harmonic progression is 1 and the common difference of the corresponding arithmetic progression is 1, what is the second term of the harmonic progression?
A.
1/2
B.
1/3
C.
1/4
D.
1/5
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Solution
The first term is 1, and the second term's reciprocal will be 1 + 1 = 2, so the second term is 1/2.
Correct Answer:
A
— 1/2
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