In a function f(x) = ax^2 + bx + c, if a > 0, what can be said about the grap

Practice Questions

Q1
In a function f(x) = ax^2 + bx + c, if a > 0, what can be said about the graph of the function?
  1. It opens upwards.
  2. It opens downwards.
  3. It has a maximum point.
  4. It is a straight line.

Questions & Step-by-Step Solutions

In a function f(x) = ax^2 + bx + c, if a > 0, what can be said about the graph of the function?
  • Step 1: Identify the function type. The function f(x) = ax^2 + bx + c is a quadratic function because it has x squared (x^2).
  • Step 2: Look at the coefficient 'a'. In the function, 'a' is the number in front of x^2.
  • Step 3: Check the value of 'a'. If 'a' is greater than 0 (a > 0), it means 'a' is a positive number.
  • Step 4: Understand what a positive 'a' means for the graph. A positive 'a' means the graph of the function will open upwards, like a U shape.
  • Step 5: Identify the minimum point. Since the graph opens upwards, it will have a lowest point, called the minimum point.
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