Unit 3 Final Review: Part 2

Unit 3 Review: Part 2

This LIVE Review is graded!

• You must answer all questions for full credit.

• You had to participate yesterday also.

Multiple Choice

Izzy works at a shoe store where she makes $40 per shift plus $10 for each pair of shoes she sells. 

 $T=\ 10x+40$ 

T is Izzy's total income, and x is the number of pairs she sells. 

If Izzy wants to make $100 for her shift, how many pairs of shoes does she need to sell?

• 6 pairs

• 5 pairs

• 10 pairs

• 2 pairs

Multiple Choice

A pizza parlor calculates the cost of a pizza using the equation

 $C\ =\ 0.75t+10$  

where C is the cost and t is the number of toppings. 

Tina only has $12. How many toppings can she get? 

• 2 toppings

• 1 topping

• 4 toppings

• 3 toppings

Calculating Slope

Multiple Choice

Find the slope:

• 3/4

• 4/3

• -3/4

• -4/3

Multiple Choice

Find the slope given the points (-2,-9) and (-1,-3).

• 4

• -1/6

• -6

• 6

Multiple Choice

Find the slope given the points (3,2) and (4,7).

• 4

• 5

• -5

• 1/5

Slope From a Graph

Rate of Change on the interval [0, 3]

Multiple Choice

What is the average rate of change on the interval [1, 5]?

• -0.65

• -0.75

• 3.75

• 4

Slope From a Table

Interval from -12 to -5.

Multiple Choice

What is Mrs. Gordon's rate from 0 to 2 seconds?

• 2.5 feet per second

• .4 feet per second

• 5 feet per second

• .2 feet per second

Average Rate of Change of a Function

Multiple Choice

f(x) = 2x² + 12x + 16
What is the average rate of change of f(x) on the interval [-3, -2].

• 2
• 1/2
• -2
• -1/2

Identifying y-intercepts In Linear Equations

Calculating Intercepts

Multiple Choice

Which function has the same y-intercept as the graph?

• $9-3x=6y$

• $f\left(x\right)=-3x+3$

• $-6x+2y=18$

• $3x-2y=6$

Multiple Choice

Which function has the same y-intercept as the function in the graph?

• $f\left(x\right)=-2x^2+x-11$

• $12x-4y=12$

• $g\left(x\right)-4=\frac{1}{2}\left(x-2\right)$

Upcoming

• Wednesday: Study session for test (via Zoom) @ 3pm

• Thursday: Unit 3 Assessment