TEKS.MATH.8.5B

Which is the graph of y= -x + 2?

• A
• B
• C
• D

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TEKS.MATH.8.5B

Which equation represents the total cost of a repair by an electrician after x hours?
An electrician charges $90 per hour plus a $50 travelling fee.

• y = 50 - 90x
• y = 90x + 50
• y = -50x + 90
• y = -90 - 50x

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TEKS.MATH.8.5B

If f(x) = 3x - 7, find f(4).

• 0
• 5
• 14
• 19

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TEKS.MATH.8.5B

Write the equation of the line.

• y = -1/3x - 2
• y = 1/3x - 2
• y = 3x - 2
• y = -3x - 2

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TEKS.MATH.8.5B

The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage.  If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?

• C = 0.20x + 15
• C =15 (0.20x)
• C = 15 + x + 0.20
• C = 0.20 + 15x

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TEKS.MATH.8.5B

If m=-3 and b= 2, what is the equation for this line?

• y= -3x +2
• y= -3x -2
• y= 3x +2
• y= 3x - 2

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TEKS.MATH.8.5B

Write the equation of the line with slope = 5 and that goes through point (3, -5)

• y = 5x - 5
• y = 5x - 20
• y = 5x + 20
• y = 5x + 15

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TEKS.MATH.8.5B

Sonya wrote the equation
y=0.1x + 5 to find the total cost of her phone bill, y, based on the number of texts she sends per month, x.  What is the y-intercept of the equation of the line?

• b=1/10
• b= 1/5
• b=1
• b=5

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TEKS.MATH.8.5B

What is the equation for standard form?

• y=mx+b
• y-y₁=m(x-x₁)
• Ax+By=C
• rise÷run

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TEKS.MATH.8.5B

Write the slope-intercept form of the equation with the given point and slope.
Through (2,5)  and m = 5/2

• y=5/2x+0 or y=5/2x
• y=-5/2
• y=-5/2x+0 or y=-5/2x

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TEKS.MATH.8.5B