Introduction to Quadratic Functions

Question 1

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

Revolt · Accepted Answer

–43

Question 2

Which represents a quadratic function?

Revolt · Accepted Answer

f(x) = –7x2 – x + 2

Question 3

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 4

Which represents a quadratic function?

Revolt · Accepted Answer

f (x) = x 2 + 2x − 5

Question 5

A 2-column table with 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 21, 10, 5, 6, 13.

Revolt · Accepted Answer

f(x) = 3x2 – 2x + 5

Question 6

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

Revolt · Accepted Answer

6

Question 7

What is f(−3) for the function f(a)=−2a2−5a+4?

Revolt · Accepted Answer

1

Question 8

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 9

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 10

Which equation represents a quadratic function with a leading coefficient of 2 and a constant term of –3?

Revolt · Accepted Answer

f(x) = 2x2 + 3x – 3

Introduction to Quadratic Functions Answers

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