COAL Friday 11/20

COAL Friday 11/20

Linear and Exponential Expressions Review

Multiple Choice

A T-shirt design company charges your team an initial fee of $25 to create the team's design. Each t-shirt printed with your design costs an additional $8. The equation for this situation is 8x + 25. Interpret the y-intercept in context.

• The additional fee of $8.

• The initial fee of $25.

• The additional fee of $25.

• The initial fee of $8.

Multiple Choice

The local service center advertises that it charges a flat fee of $50 plus $8 per mile to tow a vehicle. Write an expression that represents the of a service for m miles of towing.

• 8m + 50

• 50m +8

Multiple Choice

What would be the "a" value (initial value) for this problem?

A local zoo has a population of 32 meerkats. They are doubling every 5 years. How many would there be in 10 years?

• 32

• 2

• 5

• 10

Multiple Choice

What would be the "b" value (multiplier) for this problem?

A local zoo has a population of 32 meerkats. They are doubling every 5 years. How many would there be in 10 years?

• 32

• 2

• 5

• 10

Multiple Choice

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential expression?

• 8(15,000)^x

• 15,000(0.92)^x

• 15,000(1.08)^x

• 1500(0.08)^x

Multiple Choice

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• 15(35)^x

• 15(0.35)^x

• 15(1.35)^x

• 35(1.15)^x

Multiple Choice

Write and exponential function for the following problem: Mrs. Madison starts the year off with 100 pencils. Each week, half of the pencils disappear. How many would be left after x weeks?

• $100\left(2\right)^x$

• $100\left(\frac{1}{2}\right)^x$

• $2x\ +\ 100$

• $\left(\frac{1}{2}\right)^x$

Multiple Choice

Solve the problem: Mrs. Madison has discovered she likes to crochet. She went out an bought 7 skeins of yarn to start her collection. That collection has doubled each month. How many skeins of yarn would she have after 6 months?

• 512 skeins

• 448 skeins

• 98 skeins

• 235,298 skeins

Graphing Linear Functions

Multiple Choice

What is the slope in the equation:  y=4x+3

• 3
• 4x
• 4
• x

Multiple Choice

Find the slope of the line.

Hint: rise/run

• 1/2

• -1/2

• 2

• 0

Multiple Choice

Find the slope.

Hint: rise/run

• -5/3

• -3/5

• 5/3

• 5

Multiple Choice

What is the y-intercept in the following equation:  y=-4x-5

• -4
• -4x
• 5
• -5

Multiple Choice

What is the y intercept ?

• (1,0)

• (0-1)

• (-1, 0)

• (0,-2)

Multiple Choice

What is the equation for this line?

• $y=3x-\frac{5}{6}$

• $y=\frac{5}{6}x+3$

• $y=-\frac{5}{6}x+3$

• $y=3x+\frac{5}{6}$

Multiple Choice

The table shows the x and y values for the equation

y = 9x - 1.

Find the missing y value.

• -19

• 17

• 19

• 17

Multiple Choice

The table shows the x and y values for the equation

y = 2x + 1.

Find the missing y value.

• -2

• 3

• 9

• -7

Multiple Choice

y=x-6
What is the missing number?

• 12
• 10
• 14
• 13

Multiple Choice

Match the equation to the correct graph:

 $y=6x+4$  

Multiple Choice

Match the equation to the correct graph:

 $y=-\frac{1}{2}x+7$  

Multiple Choice

Match the equation to the correct graph:

 $y=-8x+5$  

Multiple Choice

Match the equation to the graph.

 $y=\frac{1}{5}x+4$  

Multiple Choice

Match the equation to the graph:

 $y\ =\ -\frac{1}{3}x\ +\ 3$  

Multiple Choice

Write the equation for the line in slope-intercept form.

• y= -1x+3
• y= 4x+3
• y=1/4x+3
• y= -4x+3

Multiple Choice

Solve for y:
2x + 2y = 6

• y = - x + 3
• y = x + 3
• y = 2x +6
• y = - 2x + 6

Multiple Choice

Convert the equation from Standard Form to Slope-Intercept Form:

 $x+y=-5$  

•  $-x+5$  

•  $x-5$  

•  $x+5$  

•  $-x-5$  

Multiple Choice

Convert the equation from Standard Form to Slope-Intercept Form:

 $10x+y=7$  

•  $y=-10x+7$  

•  $y=10x-7$  

•  $y=10x+7$  

•  $y=17x$  

Multiple Choice

Convert to Slope-Intercept Form then match the equation to the correct graph.

 $2x+9y=-18$  

Multiple Choice

Convert to Slope-Intercept Form then match the equation to the correct graph.

 $3x-7y=-21$  

Multiple Choice

Convert to Slope-Intercept Form then match the equation to the correct graph.

 $3x-4y=24$