Algebra Modeling Linear Functions Review

Which graph represents 2x + 4y = 12?

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What is the slope of a line that passes through the points (-4, 2) and (6, 8)?

y = 5/7x +2
y = 5/7x - 30
These lines are...

• Parallel

• Perpendicular

• Neither

y = 6x + 2
y = -6x + 2
These lines are...

• Parallel

• Perpendicular

• Neither

What slope is perpendicular to:  
m = 5/8

• -5/8

• 5/8

• -8/5

• 8/5

^{What is the x- intercept of the line?}

• (0,-2)

• (0,-1)

• (-1,0)

• (-2,0)

Find the slope of the line.

• -2

• 2

• -1

• 1

Karen earns $28.50 for working six hours. If the amount m she earns varies directly with h the number of hours she works, how much will she earn for working 10 hours?

• $47.50

• $17.10

• $54.75

• $45.55

A local donut shop charged $6.50 for a dozen and provided a coupon in the newspaper for $1.50 off an order. Since the donut shop has gained popularity they have changed their coupon which now provides a discount of only half their original coupon's value. What is the equation that represents the value of a customer's order who uses the new coupon with their order?

• y = 6.50x - 0.75

• y = 6.50x + 0.75

• y = 6.50x - 1.50 - 0.75

• y = 5x - 0.75

Heather is a hairdresser and her customers pay $5 to reserve an appointment time and $12 for every hour Heather works on their hair style. As a back to school special she offers to lower her price per hour by $5. What equation represents the total amount paid to Heather, y, after x hours of hair styling?

• y = 5 + 12x

• y = 12x

• y = 7x + 5

• y = 12x + 12