Introduction to Quadratic Functions

Question 1

When the polynomial is written in standard form, what are the values of the leading coefficient and the constant?5x + 2 – 3x2

Revolt · Accepted Answer

The leading coefficient is –3, and the constant is 2.

Question 2

On a coordinate plane, a parabola opens down. It goes through (negative 1.9, negative 4), has a vertex of (0.5, 3.2), and goes through (3, negative 4).

Revolt · Accepted Answer

0 to 1

Question 3

Which represents a quadratic function?

Revolt · Accepted Answer

f(x) = –7x2 – x + 2

Question 4

Which is f(5) for the function –2x2 + 2x – 3?

Revolt · Accepted Answer

–43

Question 5

liana started to evaluate the function f(x) = 2x2 – 3x + 7 for the input value 2.f(x) = 2(2)2 – 3(2) + 7 = 2(4) – 3(2) + 7

Revolt · Accepted Answer

9

Question 6

Which graph shows a negative rate of change for the interval 0 to 2 on the x-axis?

Revolt · Accepted Answer

On a coordinate plane, a parabola opens up. It goes through (negative 1, 4), has a vertex of (2.5, 0.25), and goes through (5.8, 4).

Question 7

When simplified and written in standard form, which quadratic function is equivalent to the polynomial shown?2 + 7c – 4c2 – 3c + 4

Revolt · Accepted Answer

–4c2 + 4c + 6

Question 8

Consider the quadratic function f(x)=8x2−7x+6. What is the constant of the function?

Revolt · Accepted Answer

6

Question 9

The graph of f(x) is shown.

Revolt · Accepted Answer

–2 to –1

Question 10

On a coordinate plane, a parabola opens up. It goes through (negative 7.5, 4), has a vertex of (negative 3, negative 9), and goes through (1.5 4). Solid circles appear on the parabola at (negative 7, 1.75), (negative 6, negative 3), (negative 3, negative 9), (0, negative 3), (1, 1.75).

Revolt · Accepted Answer

–9

Introduction to Quadratic Functions Answers

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