Introduction to Quadratic Functions

Question 1

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 2

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

Revolt · Accepted Answer

–43

Question 3

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

Question 4

Which represents a quadratic function?

Revolt · Accepted Answer

f(x) = –7x2 – x + 2

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

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

Revolt · Accepted Answer

6

Question 7

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 8

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).

Question 9

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

Revolt · Accepted Answer

1

Introduction to Quadratic Functions Answers

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