Learning Checkpoint 2 Review

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 140 pages. 

• 12 chapters
• 19 chapters
• 14 chapters
• 21 chapters

the slope is -5/7, what does that mean?

• gain 5 hour of sleep for 7 cups of coffee
• lose 5 hours of sleep for 7 cups of coffee
• lose 7 cups of coffee for 5 hours of sleep
• lose 5 cups of coffee for 7 hours of sleep

Writing the equation

You have $28 to spend on Tech-decks and Takis. Tech-decks cost $7 each and jumbo bags of Takis cost $4 each.

Let x = # of Tech-decks

Ley y = # of bags of jumbo Takis

What equation should you use for this word problem?

• 28x+7y=4

• 4x+7y=28

• 7x+4y=28

• 4x+28y=7

Finding the intercepts

You have $28 to spend on Tech-decks and Takis. Tech-decks cost $7 each and jumbo bags of Takis cost $4 each.

Let x = # of Tech-decks

Ley y = # of bags of jumbo Takis

What is your y-intercept?

• (0,4)

• (0,7)

• (7,0)

• (4,0)

Write the equation in slope-intercept form:
-3y + 5x = 12

• y = -4 + 5x
• y = -4 + 5/3x
• y = 4 - 5/3x
• y = 12 + 5x

Jackson sells 15 apples and 20 oranges and made $75. If oranges cost $1.50 per orange, how much did each apple cost?

• $2.63

• $2.00

• $1.00

• $3.00

Madison streams Netflix for $10.99 a month and Spotify for $5.99 a month. If she spent $96.88 total and had Netflix for 5 months, how many months did she have Spotify?

• 4 months

• 7 months

• 6 months

• 2 months

What is the slope intercept form of the equation
4x - 8y = 72

• y = -4x + 72
• y = -4x - 9
• y = 1/2x - 9
• y = 4x + 9

The equation, y = 3.40 + 0.80x represents the coat of a sundae with x toppings. What is the cost of a sundae with 5 toppings?

• $3.40

• $4.20

• $7.40

• $4.00