Practice Test

Question 1

The pitcher releases the ball at the highest point in the curve, and the catcher is located at the y -axis. According to the table, how high is the ball when it reaches the catcher?

Revolt · Accepted Answer

B: 2 point 5  feet

Question 2

If both the x -axis and y -axis are measured in feet and the x -axis represents the ground, what is the width of the base of the piece of equipment?

Revolt · Accepted Answer

B: 16  ft

Question 3

Consider the quadratic function f of x is equal to x squared minus 8 x minus 4 What is the value of the leading coefficient?

Revolt · Accepted Answer

C: 1

Question 4

Which function has a vertex on the y -axis?

Revolt · Accepted Answer

A: f of x is equal to x times open paren x plus 2 close paren

Question 5

Jack and Susie want to save to buy a trampoline for their children. They each open a savings account that earns 1 point 5 percent a year. Jack opens his account with 1 dollars comma 000 , and Susie opens her account with 800 dollars x is equal to number of years The following functions represent the value of the savings accounts in x years: Jack’s savings account: f of x is equal to 1000 times 1 point 0 1 5 to the x th power Susie’s savings account: g of x is equal to 800 times 1 point 0 1 5 to the x th power Which function represents the total amount Jack and Susie will save in x years?

Revolt · Accepted Answer

D: 1800 times 1 point 0 1 5 to the x th power

Question 6

What is the range of the function f of x is equal to negative x plus 3 squared plus 7 ?

Revolt · Accepted Answer

D: all real numbers greater than or equal to  7

Question 7

Which is the graph of the function f of x is equal to x squared plus 2 x plus 3 ?

Revolt · Accepted Answer

A: Image with description On a coordinate plane, a parabola opens up. It goes through (negative 2 comma 3), has a vertex at (negative 1 comma 2), and goes through (0 comma 3).

Question 8

Gerald graphs the function f of x is equal to x negative 3 squared negative 1 Which statements are true about the graph? Choose three correct answers.

Revolt · Accepted Answer

A: The range is  start set y such that y is greater than or equal to negative 1 end set .; C: The function decreases over the interval  open paren negative infinity comma 3 close paren .; E: The domain is  start set x such that x is greater than or equal to 3 end set .

Question 9

f of x is equal to 2 x minus 1 g of x is equal to 7 x minus 12 What is h of x is equal to f of x plus g of x ?

Revolt · Accepted Answer

A: h of x is equal to 9 x minus 13

Question 10

Which statements about the function are true? Choose three correct answers.

Revolt · Accepted Answer

B: The graph is increasing on the interval  x is greater than negative 3 .; C: The vertex of the function is at  negative 3 comma negative 16 .; D: The graph is positive only on the intervals where  x is less than negative 7  and where  x is greater than 1 .

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