Accelerated 8 Lesson 9

Accelerated 8

February 3, 2021

Vertical Line Test

On a graph, the idea of single valued means that no vertical line ever crosses more than one value.

If it crosses more than once it is still a valid curve, but is not a function.

Multiple Select

Five input/output tables are shown. Select all the tables that model functions.

Multiple Choice

Which graph is not a function?

Multiple Choice

Quiz 15 Review Question: Go look up what you answered, keep it the same if it was correct. 

Two linear functions are shown. At what point do the two functions intersect?

• $\left(-4,8\right)$

• $\left(-2,6.5\right)$

• $\left(0,3\right)$

• $\left(2,2.5\right)$

Fill in the Blanks

Multiple Choice

Quiz 15 Review Question: Go look up what you answered, keep it the same if it was correct. 

Josie compares Function 1,   $y=\frac{1}{2}x-2$  , with Function 2, a linear function modeled by the points in the table below. Which statement correctly compares the two functions?

• The rates of change of both functions are positive.

• The y-intercept of Function 1 is the same as that of Function 2.

• The y-intercept of Function 1 is greater than that of Function 2.

• The rate of change of Function 1 is the same as that of Function 2. 

Multiple Choice

Quiz 15 Review Question: Go look up what you answered, keep it the same if it was correct. 

Which table represents a linear function?

Multiple Choice

Quiz 15 Review Question: Go look up what you answered, keep it the same if it was correct.

Toby needs to buy 15 reeds for his clarinet from an online store. Company 1 charges its customers based on the graph where x is the number of reeds and y is the total charge. Company 2 charges its customers based on the chart. Which store charges Toby less for 15 reeds and by how much?

• Company 1 charges $0.25 less than Company 2.

• Company 1 charges $3.25 less than Company 2.

• Company 2 charges $2.25 less than Company 1.

• Company 2 charges $0.50 less than Company 1.

Fill in the Blanks