# Lesson Worksheet: Evaluating Functions Mathematics • 9th Grade

In this worksheet, we will practice calculating the value (or output) of a function using its equation or its graph.

Q1:

Which of the following set of coordinates lies on ?

• A
• B
• C
• D

Q2:

Find , given the point lies on the function .

Q3:

Several fish were accidentally released into a lake. After weeks, the number of fish is estimated to be . Determine the likely number of fish in the lake after 5 weeks. Give your answer to the nearest whole number.

Q4:

Find given the function .

Q5:

Given that the function , where , determine .

Q6:

Using the function , calculate the corresponding output for an input of 2.

Q7:

Find the value of given the function and the function .

Q8:

Complete the given table of values for the function .

 𝑥 𝑦 −2 −1 0 1 2 ⋯ ⋯ ⋯ ⋯ ⋯
• A, , 1, 5, 16
• B, , 0, 1, 8
• C, , 0, 1, 8
• D, , 1, 5, 16
• E16, 5, 0, 1, 8

Q9:

Complete the given table of values for the function .

 𝑥 𝑦 −2 −1 0 1 2 ⋯ ⋯ ⋯ ⋯ ⋯
• A, 0, 15, 16, 3
• B27, 14, 8, 14,
• C59, 30, 15, 16, 3
• D, 0, 8, 14,
• E27, 14, 15, 16, 3

Q10:

Given that the point lies on the graph of , find .

• A
• B
• C
• D
• E

This lesson includes 21 additional questions and 130 additional question variations for subscribers.