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

Tags

TEKS.MATH.8.5B

Which best describes this equation?
y= 3.75x + 2

• Proportional 
• Non-proportional

Tags

TEKS.MATH.8.5B

On Monday Joe bought 10 cups of coffee and 5 doughnuts for his office at the cost of $16.50.  It turns out that the doughnuts were more popular than the coffee.  On Tuesday he bought 5 cups of coffee and 10 doughnuts for a total of $14.25.  Which equations could be used to determine the cost of the coffee? 

• 10c + 5d = 14.25
  5c + 10d = 16.50
• 10c + 5d = 16.50
  5c + 10d = 14.25
• c + d = 10
  5c + 10d = 16.50
• c + d = 5
  5c + 10d = 16.50

Tags

TEKS.MATH.8.5B

What is the equation of this line in slope-intercept form?

• y = 2x + 5
• y = -2x + 5
• y = -2x
• y = 5

Tags

TEKS.MATH.8.5B

Solve the following system by graphing.  What is the solution?

• (-4, 2)
• (4, 2)
• (2, -4)
• (2, 4)

Tags

TEKS.MATH.8.5B

What is the equation of the line?

• y = -3/4x + 3
• y = 4/5x + 3
• y = -4/5x + 3
• y = -4/5x

Tags

TEKS.MATH.8.5B

Write the equation of the line.

• y = x + 1
• y= x - 1
• y= -x + 1
• y= -x - 1

Tags

TEKS.MATH.8.5B

A holiday meal costs $12.50 a person plus a delivery fee of $30.

• 30 + 12.5x 
• 12.5 + 30
• 12.5 + 30x

Tags

TEKS.MATH.8.5B

If the parent function (y = x) is changed to have a slope of (2/3) and a y-intercept of 4, then which is true?

• The new line is steeper than the original and the y-intercept has been translated down.
• The new line is less steep than the original and the y-intercept has been translated up.
• The new line is steeper than the original and the y-intercept has been translated up.
• The new line is less steep than the original and the y-intercept has been translated down.

Tags

TEKS.MATH.8.5B

If the parent function (y = x) is changed to have a slope of (2/3) and a y-intercept of 4, then which is true?

• The new line is steeper than the original and the y-intercept has been translated down.
• The new line is less steep than the original and the y-intercept has been translated up.
• The new line is steeper than the original and the y-intercept has been translated up.
• The new line is less steep than the original and the y-intercept has been translated down.

Tags

TEKS.MATH.8.5B