Directions: To check your answers, click the mouse to shine the light on the ghost and watch the answers appear!

The 7th Grade Haunted House of Connected Math

What is happening to the x variable and the y variable on the graph?

As the x is increasing, the y is increasing at a steady rate and then starting to level off

Which variable is independent and which variable is dependent?

number of players

Independent

Cost

dependent

Why did you choose the variable as your

dependent variable?

the cost depends on the number of shirts

Besides showing patterns easily, would it make sense to connect the points on the graph of cost and number of

shirts?

No, the data

is not continuous. (cannot buy part of a shirt)

Make a table to show Sue making $6.00 an hour from 1 to 6 hours.

Time(hr) Money($)

1 $6.00

2 $12.00

3 $18.00

4 $24.00

5 $30.00

6 $36.00

Write an equation for the total cost of books if each

book is $8.99.

c = 8.99n,

where c = the total cost & n = the # of books

Write an equation for the total cost if Jen and Mary charge $10 plus $5 an

hour to babysit.

c = 10 +

5h, where c = total cost & h = # of hours

Lou charges $4.50 an hour to rake leaves. If he graphed the amount

earned from 1 hour to 8 hours, what would his

graph look like? How do you know?

A straight line upward segment

It is a constant rate

If p = total number of pencils needed and each student in math

class needs 4 pencils, write an equation to show the total number

of pencils needed.

p = 4n, where p = total # pencils & n = # of students

Explain what it means when a graph is showing a

straight-line segment either on an increasing or decreasing slant.

means the data is increasing or decreasing at a steady rate

Use the equation d = 55t

What is the distance traveled in 5 hours?

The distance traveled in 5 hours is 275 miles.

Use the equation d = 8t

Find the distance traveled in 2.5 hours?

The distance traveled in 2.5 hours is 20 miles.

Use the formula d = 30t

If the distance traveled was 120 miles, how long did it take?

It would take 4 hours to travel 120 miles.

If you connect the points on a graph and the segment is

horizontal from one point to the next, what does this tell

you?

The data stayed at the same amount

What is the purpose of making a coordinate graph?

to show the relationship between variables

Jack is saving $40 a week for a new TV. Make a

table to show his savings from 0-4 weeks.

Week Savings($)

0 $0

1 $40

2 $80

3 $120

4 $160

Chris is saving for the TV too. He has already saved $120

from his chores. He plans on saving $20 a week. Make a

table to show his savings from 0 to 4 weeks.

Week Savings($)

0 $120

1 $140

2 $160

3 $180

4 $200

Write an equation for Jack’s total savings for $40 a week

s = 40w, where

s = the total savings

& w = # of weeks

Write an equation for Chris’ savings – he started with

$120 and saved $20 a week

s = 120 + 20w, where s = total savings & w = # of weeks

Solve 6x = 24 Show work on both sides

6x = 24

÷6 ÷6

x = 4

Solve x/3 – 15 = 10

x/3 – 15 = 10

+15 +15

x/3 = 25

*3 *3

X = 75

Make sure to review Investigation 1 and 2 quizzes

Study tonight….

Good Luck tomorrow!!

Thank you for playing!