Introduction to Quadratic Functions

Question 1

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 2

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 3

Which represents a quadratic function?

Revolt · Accepted Answer

f(x) = –7x2 – x + 2

Question 4

The graph of f(x) is shown.

Revolt · Accepted Answer

–2 to –1

Question 5

Which represents a quadratic function?

Revolt · Accepted Answer

f (x) = x 2 + 2x − 5

Question 6

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

Revolt · Accepted Answer

–43

Question 7

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 8

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

Revolt · Accepted Answer

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 graph represents a quadratic function with a vertex at (0, 0)?

Revolt · Accepted Answer

On a coordinate plane, a parabola opens up. It goes through (negative 5, 6), has a vertex of (0, 0), and goes through (5, 6).

Introduction to Quadratic Functions Answers

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