Rates

Question 1

What is a unit rate?

Answer 1

a rate for one of something

Question 2

Mark is paid $187 per 2 weeks. How much is he paid per day?

Answer 2

$13.35

Question 3

Jessie has a babysitting job where she gets paid 20 dollars per child she babysits. How much money will she make if she babysits 5 kids per week for 4 weeks?

Answer 3

$400

Question 4

If you get 10 pages of homework per 2 weeks, how many pages homework should you do per school week to finish all of it?

Answer 4

1

Question 5

What is rate of change?

Answer 5

how quickly something changes over time (y=kx, k being the constant rate,)
also known as constant of proportionality

Question 6

In the equation y=kx, what does k stand for?

Answer 6

the constant of proportionality

Question 7

Lia and Nolan are running a bake sale. The table shows the relationship between x, the amount of cookies, and y, the amount of money they make.

x(cookies) y(money)
5 10
10 15
15 20
According to the values in the table, do x and y have a proportional relationship?

Answer 7

Yes

Question 8

Sophie is selling bracelets. The table shows the relationship between x, the amount of bracelets, and y, the amount of money she makes.

x(bracelets) y(money)
2 4
6 13
15 20
According to the values in the table, do x and y have a proportional relationship?

Answer 8

No

Question 9

Is this a proportional relationship?
y = 3x + 1

Answer 9

No

Question 10

Is this a proportional relationship?
y = 4x - 2

Answer 10

No

Question 11

Select all proportional relationships
1. y = 4x - 2
2. y = 2x
3. y = 3x
4. y = 7x + 1

Answer 11

2 and 3

Question 12

How do you define a proportional relationship?

Answer 12

Proportional relationships will be in the form y = kx