Unit 4-Linear Functions (Pre-Test)

Sandy is upgrading her internet service. Comcast charges $60 for installation and $50.45 per month of service. AT&T has free installation but charges $57.95 per month. How many months would I have to have cable for to pay the same amount with both companies? Identify the equation that models this situation.

• 60x + 50.45 = 57.95
• 60x + 50.45 = 57.95x
• 60 + 50.45x = 57.95x
• 60x + 50.45x = 57.95x

Tags

CCSS.7.EE.B.4A

A twelve inch candle and an 18 inch candle are lit at 6pm. The 12 inch candle burns 0.5 inches every hour. The 18 inch candle burns two inches every hour. At what time will the two candles be the same height? Identify the equation that models this situation.

• 12 - 0.5x = 18 - 2x
• 12 + 0.5x = 18 + 2x
• 12x - 0.5 = 18x - 2
• 12 - 6x = 18 - 2x 

Tags

CCSS.8.EE.C.8C

Find the slope of the line.

• -2
• 2
• -1
• 1

Tags

CCSS.8.EE.B.5

Find the slope of the line.

• Undefined
• 0
• 1
• -1

Tags

CCSS.8.EE.B.5

Find the slope of the line.

• Undefined
• 0
• 1
• -1

Tags

CCSS.8.EE.B.5

What direction is an undefined slope?

• horizontal
• vertical

Tags

CCSS.8.EE.B.5

What is the slope of all horizontal lines?

• 0
• undefined
• 1
• -1

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.8.EE.B.5

Find the slope of the line that passes through
(10, 1) and (5, 2)

• 1/5
• -1/5
• 5
• -5

Tags

CCSS.8.EE.B.5

What is the y-intercept of the equation:
 y = 2x - 3 

• -2
• 2
• 3
• -3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3