Tuesday 1/26

Tuesday 1/26

Work on your warm up minute for today

Review from Yesterday

Writing Equations from table, graph, and word problems

Multiple Choice

Which equation best represents the relationship between x and y in the table shown?

• y= 5x+5
• y=1/5x+5
• y=15x+5
• y=10x+5

Multiple Choice

Give the equation for the graph

• y = 5x - 3
• y = 4x + 2
• y =-2x + 5
• y = - 2x + 4

Multiple Choice

Bob's Plumbing charges $15 per hour plus a service fee of $40 for coming out to your house. Which equation models this situation?

• y = 15x + 40

• y = 40x + 15

• y = 15x

• y = 15x - 40

The next few slides will be a word problem we pick through together and then a slide for you to answer it

Ace Telecommunications charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for it phone service. Which equation can be used to find c, the total cost for one month when m, minutes are used?

Multiple Choice

Ace Telecommunications charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for it phone service. Which equation can be used to find c, the total cost for one month when m, minutes are used?

• c = 0.12m + 8m

• c = 8m + 0.12m

• c = 0.12m + 8

• c = 0.20m

Eddie's Electric charges $90 per hour plus a $50 traveling fee. Which equation models this scenario?

Multiple Choice

Eddie's Electric charges $90 per hour plus a $50 traveling fee. Which equation models this scenario?

• y = -50x + 90

• y = 90x + 50

• y = -90 - 50x

• y = 50 - 90x

A holiday meal cost $12.50 a person plus a delivery fee of $30. Which equation represents the amount a holiday meal costs(y), including delivery, for x people?

Multiple Choice

A holiday meal cost $12.50 a person plus a delivery fee of $30. Which equation represents the amount a holiday meal costs(y), including delivery, for x people?

• y = 12.50 + 30x

• y = 30 + 12.50x

• y = 12.50 + 30

• 12.50x = 30

Scott's Automotive charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie was charged $63.

Multiple Choice

Scott's Automotive charges $35 for each car plus $7 per hour. Write an equation that represents this scenario if Kylie was charged $63.

• 35x + 7 = 63

• 7x = 63

• 7x - 35 = 63

• 7x + 35 = 63

Dexter's Gym charges a one-time registration fee of $40 and $20 each month. The total fee after x months is $340. Which equation models this situation?

Multiple Choice

Dexter's Gym charges a one-time registration fee of $40 and $20 each month. The total fee after x months is $340. Which equation models this situation?

• 40x + 20 = 340

• 20x + 40 = 340

• 20x - 40 = 340

• 20 + 340 = 40x

Mallory bought pizza and soda for a party. If she spent $12.57 on the sodas and $10.95 for each pizza, how many pizzas did she buy if her total is $89.22?

Multiple Choice

Mallory bought pizza and soda for a party. If she spent $12.57 on the sodas and $10.95 for each pizza, how many pizzas did she buy if her total is $89.22?

• 10.95x + 12.57 = 89.22

• 12.57x + 10.95 = 89.22

• 89.22x -10.95 = 12.57

• 12.57 + 10.95 = 89.22

Multiple Choice

What could this represent? 7x + 2 = 30

• Buying pet turtles for $7 each plus two cans of turtle food cost $30.

• Seven bags of candy plus 2 extra snickers bars equals 30 dollars.

• Two yoyos plus seven frisbees is thirty cents.

• Buying seven calculators plus $2 per bundle of pencils is $30.

Comparing Functions

To compare functions:

• Compare slopes

• Compare y-intercepts

Multiple Choice

Which equation has the steepest slope?

• y = 10x - 5

• y = 8x - 2

Multiple Choice

Which line is the steepest?

• Line A

• Line B

• Line C

• Line D

Multiple Choice

What slope is the steepest?

Harry is in need of a mechanic. Larry's Automotive charges $65 per hour. Roland's Mechanic House charges $60 per hour.

Who should Harry select?

Harry is in need of a mechanic. Larry's Automotive charges a flat fee of $150 and then $65 per hour. Roland's Mechanic House charges $60 per hour and a flat fee of $300.

Who should Harry select if it will take 4 hours to complete his car?

Ron is looking for a pet sitter for his pet rat. Hagrid's Pet Service charges an initial fee of $20 and then $5 for each day after that. Newt Scamander's Creature Care charges are included in the table to the right.

• Who should Ron select if he needs a sitter for 10 days?

Multiple Choice

The cost of Nate’s service is described by y = 4x + 6. The table shows the cost of Beth’s service. Find the equation for Beth's service. Which service is cheaper for 8 movies in one month?

• Beth's service ($38 vs. $40) is cheaper

• Nate’s service ($42 vs. $44) is cheaper

• Nate’s service ($38 vs. $40) is cheaper

• Beth's service ($42 vs. $44) is cheaper

Multiple Choice

The table below shows some of the values for the linear function f.

Let g be the linear function defined by y = 4x + 5.

Which statement is true?

• The graph of f has a greater slope than the graph of g.

• The graph of g has a greater slope than the graph of f.

• The graph of f has the same slope as the graph of g.

• The slopes of the graphs of f and g are undefined.

Multiple Choice

Jay earns $50 per week, plus $5.25 for each hour worked in a given week. Fred’s earnings are calculated using the formula P = 6.25x + 50, where x is the number of hours Fred worked.

Which statement is true?

• Jay earns $2.75 per hour less than Fred.

• Fred earns $40 more than Jay for 40 hours of work.

• Jay and Fred both earn the same for 40 hours of work in a week.

• Fred earns $42 less than Jay each week when both work 0 hours.

Multiple Choice

Leonard compared the cost of purchasing a gallon of gas at two different gas stations.

The function C(g) = 3.25 + 0.07x models the average cost of a gallon of gas at the first gas station after x months. The table below shows the average cost of a gallon of gas at the second gas station after different numbers of months.

Which statement is true?

• The first station had a higher initial price per gallon and increased at a greater amount per month than the second station.

• The second station had a higher initial price per gallon and increased at a greater amount per month than the first station.

• The first station had a higher initial price per gallon but increased at a smaller amount per month than the second station.

• The second station had a higher initial price per gallon but increased at a smaller amount per month than the first station.

Multiple Choice

How much will you pay Store A per week for a phone?

• $25

• $150

• $15

• $50

Multiple Choice

Which kitten grows fastest? What is it's rate of change (slope)?

• Kitten A with a rate of change of 3

• Kitten B with a rate of change of 4

• Kitten A with a rate of change of 4

• Kitten B with a rate of change of 3

Multiple Choice

Who has the greater rate of change (slope)?

• Troy has the greater rate of change.

• Lucy has the greater rate of change

• They have the same rate of change