Pretest

Question 1

What is the equation of the axis of symmetry of the graph of y is equal to A x squared plus b x plus c ?

Revolt · Accepted Answer

x is equal to negative b over 2 A

Question 2

What is the vertex of the graph of y is equal to negative x squared ?

Revolt · Accepted Answer

open paren 0 comma 0 close paren

Question 3

Which function is a quadratic function?

Revolt · Accepted Answer

h of t is equal to 12 minus t plus 6 t squared

Question 4

What is the axis of symmetry for the graph of y minus 4 x is equal to 7 minus x squared ?

Revolt · Accepted Answer

x is equal to 2

Question 5

What is the vertex and the equation of the axis of symmetry of the graph of y is equal to x squared minus 6 x minus 7 ?

Revolt · Accepted Answer

vertex: open paren 3 comma negative 16 close paren a.o.s: x is equal to 3

Question 6

Which function is a quadratic function?

Revolt · Accepted Answer

u times x is equal to negative x plus 3 x squared minus 8

Question 7

The height of a baseball hit from a bat is modeled by a quadratic function of time, h of t What does the second coordinate of the vertex of the quadratic function represent?

Revolt · Accepted Answer

the maximum height of the baseball

Question 8

Which function is a quadratic function?

Revolt · Accepted Answer

h of x is equal to 3 x open paren x minus 2 close paren minus 4

Question 9

What is the vertex of the graph of y is equal to x squared plus 4 x ?

Revolt · Accepted Answer

open paren negative 2 comma negative 4 close paren

Question 10

Which function is a quadratic function?

Revolt · Accepted Answer

p times x is equal to negative 5 x minus x squared

Pretest Answers

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