Quadratic Functions: Standard Form Quiz

Over which interval is the graph of f(x) = -x2 + 3x + 8 increasing? (-∞, 1.5) (-∞, 10.25) (1.5, ∞) (10.25, ∞)

A

The a value of a function in the form f(x) = ax2 + bx + c is negative. Which statement must be true? The vertex is a maximum. The y-intercept is negative. The x-intercepts are negative. The axis of symmetry is to the left of zero.

A

The graph of which function has a y-intercept of 3?

A

What are the x-intercepts of the graph of the function f(x) = x2 + 4x - 12? (-6, 0), (2,0) (-2, -16), (0, -12) (-6, 0), (-2, -16), (2, 0) (0, -12), (-6, 0), (2, 0)

A

Which is the graph of the function f(x) = 1/2x2 + 2x - 6?

A

Which statements about the graph of the function f(x) = 2x2 - x - 6 are true? Select two options. The domain of the function is . The range of the function is all real numbers. The vertex of the function is . The function has two x-intercepts. The function is increasing over the interval (, ∞).

B? D?

Tempestt graphs a function that has a maximum located at (-4, 2). Which could be her graph?

C

What is the range of the function f(x) = 3x2 + 6x - 8? {y|y ≥ -1} {y|y ≤ -1} {y|y ≥ -11} {y|y ≤ -11}

C

What is the x-intercept of the graph of the function f(x) = x2 − 16x + 64? (−8, 0) (0, 8) (8, 0) (0, −8)

C

The graph of which function has an axis of symmetry at x = 3?

D