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Open Up - Grade 8 - Mathematics - Unit 3 - Lesson 8

Last updated over 5 years ago

4 Nsɛmmisa

1

8.G.1.a

1

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2.

A cable company charges $70 per month for cable service to existing customers.
Find a linear equation representing the relationship between x, the number of months of service, and y, the total amount paid in dollars by an existing customer.

8.G.1.a

1

8.G.1.a

1

8.G.1.a

"Source: Open Up Resouces (Download for free at openupresources.org.)"

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1.

Select all equations that have graphs with the same y-intercept.

y = 5x - 8

y = 3x - 8

y = 3x + 8

y = \frac{1}{3}x - 8

y = 3x - 9

y = 2x - 8

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3.

Match each graph to a situation.

Draggable item		Corresponding Item
D.		2.
C.		4.
A.		1.
B.		3.

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4.

A mountain road is 5 miles long and gains elevation at a constant rate. After 2 miles, the elevation is 5500 feet above sea level. After 4 miles, the elevation is 6200 feet above sea level. Use the information to find the elevation per mile.
Find the elevation of the road at the point where the road begins.