7th Grade Linear Relationships

An electrician charges $25 to make a house call, plus $40 for every hour of work. Which equation shows how to find C, the total cost for having the electrician work for h hours?

• C = 25 + 40h

• C = 65 + h

• C= 65h

• C = 25h + 40

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CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which table shows the equation y = 1/2x - 7

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The graph shows the cost of a personal pizza (y) vs. the number of toppings (x). Which equation best describes the relationship above?

• y = 2x

• y = 2x + 4

• y = 4x

• y = 2x + 2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which of the following situations could be described by the equation y = 120 - 25x ?

• There are 120 people in the football stadium, and 25 more are entering each hour

• A plumber charges $25 for a house call and $120 per hour

• A teacher has 120 students. Her third period has 25 students

• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

Pierre sells homecoming mums for $10, plus and additional $0.75 per decoration added. Which table shows the relationship between the total cost of the mum (C) and the number of decorations (d)?

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Which graph shows the equation y = -1/2x + 5

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CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

The table represents which of the following equations?

• y = 6x

• y = x + 2

• y = 2x + 4

• y = x + 5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Harriet uses 3/4 of a cup of brown sugar per batch of cookies she makes. Which graph shows the relationship between the batches of cookies (x) and the cups of brown sugar needed (y)?

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Tags

CCSS.8.EE.B.5

Which table shows the relationship represented by the graph?

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Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Which graph correctly displays the data from the table?

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Tags

CCSS.8.EE.B.5