Topic 3 Review Part 2

Multiple Choice

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Multiple Choice

If a question asks you to find f(2), what does that mean?

• Let x = 2

• Let y = 2

Multiple Choice

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Multiple Choice

Evaluate f(-2) if f(x) = x + 3

• -1
• 1
• 5
• -5

Multiple Choice

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5
• x = 5
• x = -50
• x = 30

Multiple Choice

What is f(1)?

• 1
• 5
• 0
• 4

Multiple Choice

What is x if
f(x) = -2?

• 4
• 0
• 3
• 8

Multiple Choice

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data. USE DESMOS!

• y = 1.5x + 12

• y = 12x + 1.5

• y = 0.67x - 8

• y = -8x + 0.67

Multiple Choice

Given the following Scatter Plot, select the option that is most likely the r value.

• $$r=.27$$

• $$r=-.862$$

• $$r=.934$$

• $$r=.54$$

Multiple Choice

Given the following Scatter Plot, select the option that is most likely the r value.

• $$r=-.45$$

• $$r=-.981$$

• $$r=.728$$

• $$r=.12$$

Multiple Choice

Given the following Scatter Plot, select the option that is most likely the r value.

• $$r=-.1$$

• $$r=-.981$$

• $$r=.92$$

• $$r=.765$$

Multiple Choice

r = -0.3 is considered to have...

• moderate negative correlation

• weak negative correlation

• no correlation

• strong negative correlation