If a line has a slope of -2 and passes through the point (3, 5), what is its y-i

Practice Questions

Q1
If a line has a slope of -2 and passes through the point (3, 5), what is its y-intercept?
  1. 1
  2. 3
  3. 5
  4. 7

Questions & Step-by-Step Solutions

If a line has a slope of -2 and passes through the point (3, 5), what is its y-intercept?
  • Step 1: Identify the slope (m) and the point (x1, y1). Here, m = -2 and the point is (3, 5).
  • Step 2: Use the point-slope form of the equation of a line: y - y1 = m(x - x1).
  • Step 3: Substitute the values into the equation: y - 5 = -2(x - 3).
  • Step 4: Simplify the equation: y - 5 = -2x + 6.
  • Step 5: Add 5 to both sides to solve for y: y = -2x + 6 + 5.
  • Step 6: Combine the constants: y = -2x + 11.
  • Step 7: Identify the y-intercept, which is the constant term when x = 0. Here, the y-intercept is 11.
  • Point-Slope Form – The point-slope form of a linear equation is used to find the equation of a line given a point and the slope.
  • Finding the y-Intercept – The y-intercept is found by setting x to 0 in the equation of the line.
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