Quadratic Functions: Standard Form

Question 1

The a value of a function in the form f(x) = ax2 + bx + c is negative. Which statement must be true?

Revolt · Accepted Answer

The vertex is a maximum.

Question 2

On a coordinate plane, a parabola opens up. It goes through (negative 8, negative 2), has a vertex at (negative 5, negative 6.5), goes through (negative 2, negative 2), and has a y-intercept at (0, 6).

Revolt · Accepted Answer

(–5, ∞)

Question 3

Which statements about the graph of the function f(x) = 2x2 – x – 6 are true? Select two options.

Revolt · Accepted Answer

The vertex of the function is .; The function has two x-intercepts.

Question 4

The axis of symmetry for the graph of the function is x=6. What is the value of b?

Revolt · Accepted Answer

−3

Question 5

What is the y-intercept of the graph of the function f(x) = x2 + 3x + 5?

Revolt · Accepted Answer

(0, 5)

Question 6

On a coordinate plane, a parabola opens up. It goes through (negative 3, 0), has a vertex at (negative 1, negative 11), and goes through (1, 0).

Revolt · Accepted Answer

{y|y ≥ –11}

Question 7

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

Revolt · Accepted Answer

f(x) = x2 – 6x – 1

Question 8

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

Revolt · Accepted Answer

On a coordinate plane, a parabola opens up. It goes through (negative 3, 3), has a vertex at (negative 1.5, 0.75), and goes through (0, 3).

Question 9

The axis of symmetry for the graph of the function f(x)=3x2+bx+4 is . What is the value of b?

Revolt · Accepted Answer

−9

Question 10

On a coordinate plane, a parabola opens up. It goes through (negative 6, 0), has a vertex at (negative 2, negative 16), has a y-intercept at (0, negative 12), and goes through (2, 0).

Revolt · Accepted Answer

(–6, 0), (2,0)

Quadratic Functions: Standard Form Answers

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