TEKS.MATH.8.5B

Is the equation y=7x+5 proportional or non-proportional?

• proportional
• non-proportional

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TEKS.MATH.8.5B

Bob has $150 in his savings account and saves $40 per month.  Which equation represents the amount Bob has in his account after x months?

• y = 150 + 40
• y = 40x + 150
• y = 150x + 40

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TEKS.MATH.8.5B

Sandra has a $20 itunes gift card and spends $3 each month.  Which equation can be used to find how much money Sandra has on her giftcard after x months?

• y = 3x + 20
• y = 3 + 20x
• y = -3x + 20
• y = -20x + 3

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TEKS.MATH.8.5B

Write the equation of the line.

• y=-3x-4
• y=-4x-3
• y=(-3/4)x-3
• y=(-4/3)x-3

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TEKS.MATH.8.5B

Which one does NOT belong to NON-PROPORTIONAL relationships?

• y=mx
• Does NOT cross through origin
• y/x is not the same
• equation will have plus (+) something

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TEKS.MATH.8.5B

If f(x) = -3x - 8, find f(-1).

• f(-1) = 5

• f(-1) = -5

• f(-1) = -12

• f(-1) = -10

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TEKS.MATH.8.5B

Given y = mx+b, what does the y intercept mean in this scenario?

• Cost per mile

• Total miles driven

• Total cost

• Initial car rental fee

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TEKS.MATH.8.5B

Graph the line with the equation
 $y\ =\ -\frac{1}{3}x\ -\ 4$  

• 
• 
• 
• 

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TEKS.MATH.8.5B

Which variable represents the y-intercept?

• y

• m

• x

• b

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TEKS.MATH.8.5B

Suppose that a bike rents $1.50 per hour plus a $4. Write an equation in slope-intercept form that models this situation.

• y = 4x + 1.50

• y = 1.50x + 4

• y = -1.50x - 4

• y = -4x -1.50

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TEKS.MATH.8.5B