FOA Study Guide Module 2

What is the slope (rate of change) for this graph?

*If the line starts at the origin (0, 0), identify a point, and then divide y by x.

• 15

• 2

• 7

• 7.5

What is the equation for this graph?

*Remember if the graph starts at the origin the equation will not have a constant.

• y = 2x + 15

• y = 7x

• y = 7.5x +2

• y = 7.5x

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

What does the point (8, 60) mean in the context of this situation?

*Notice the name of the x and y axis (x, y) (hours, songs)

• 45 songs are played in 6 hours

• It takes 8 hours to play 60 songs

• 8 songs are played in 60 hours

Give the equation for the graph.

*find the y-intercept (that will be the constant in the equation, find the slope from two points; or graph each equation to determine which matches the graph

• y = 5x - 3
• y = 4x + 2
• y =-2x + 5
• y = - 2x + 4

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Write the equation of the line.

*identify the y-intercept, then figure the slope

• y = 3x - 2
• y = -3x +2

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

• A
• B

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Skylar rented a bike for the weekend. She paid a rental fee of $30, plus $10 per day. Which equation best represents this situation?

*the constant is the initial fee, the slope is the part that can change (vary)

y=mx+b

Max rented a scooter for a week. He paid a rental fee of $50, plus $15 per day. Which equation best represents this situation?

*the constant is the initial fee, the slope is the part that can change (vary)

y=mx+b

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3