Evaluating Functions

Question 1

Which statement is true regarding the graphed functions?

Revolt · Accepted Answer

f(0) = g(0)

Question 2

On a coordinate plane, a red curved line with an upward arc, labeled g of x, crosses the x-axis at (negative 2, 0), and the y-axis at (0, 4). A blue curved line with an upward arc, labeled f of x, crosses the y-axis at (0, 4) and the x-axis at (2, 0).

Revolt · Accepted Answer

f(2) = 0 and g(–2) = 0

Question 3

What is the inverse of the function f(x) = 2x + 1?

Revolt · Accepted Answer

h(x) = x –

Question 4

On a coordinate plane, a straight red line with a negative slope, labeled g of x, crosses the y-axis at (0, negative 7). A straight blue line with a positive slope, labeled f of x, crosses the x-axis at (negative 1, 0) and the y-axis at (0, 2). Both lines intersect at (negative 3, negative 4).

Revolt · Accepted Answer

f(–3) = g(–3)

Question 5

A graph shows the number of texts, numbered 10 to 100, on the x-axis, and the total cost in dollars, numbered 3 to 27, on the y-axis. A straight red line with a positive slope, labeled Emilia, begins at (0, 10), and a straight blue line with a positive slope, labeled Hiroto, begins at (0, 20). Both lines intersect at point (50, 22.5).

Revolt · Accepted Answer

Both plans cost the same when 50 texts are sent.

Question 6

What is the inverse of the function f(x) = x + 2?

Revolt · Accepted Answer

h(x) = 9x – 18

Question 7

The functions f(x) and g(x) are graphed.

Revolt · Accepted Answer

f(0) = g(0) and f(2) = g(2)

Question 8

If f(x) = + 8, what is f(x) when x = 10?

Revolt · Accepted Answer

13

Question 9

Which represents the inverse of the function f(x) = 4x?

Revolt · Accepted Answer

h(x) = x

Evaluating Functions Answers

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