Proportional Relationships and Graphs

What makes a graph proportional?

• Curvy line

• Goes through origin

• Straight line

• Straight line that goes through the origin

Tags

CCSS.7.RP.A.2D

Does the graph represent a proportional relationship?

• Yes

• No

Tags

CCSS.7.RP.A.2D

Identify the constant of proportionality. Write an equation to relate weight, w, to the price, p.

• k = 0.45; p = 0.45w

• k = 45; p = 45w

• k = 0 .22; p = 0.22w

• k = 22; p = 22w

Tags

CCSS.7.RP.A.2C

Is this graph proportional?

• Yes

• No

Tags

CCSS.7.RP.A.2D

A graph shows a straight line that passes through the points (0,0) and (5,15). What is the equation of the line that represents this proportional relationship?

Tags

CCSS.7.RP.A.2C

Graph a proportional line

with a constant of 2/4

Tags

CCSS.7.RP.A.2D

Plot the points on the graph.

d

a

b

c

2,100

4, 180

6,260

8,340

Tags

CCSS.6.NS.C.6C

Given the graph of a line that passes through the origin and the point (4, 8), which of the following is true about the relationship between x and y?

• The relationship is not proportional.

• The relationship is proportional, and the constant of proportionality is 0.5.

• The relationship is proportional, and the constant of proportionality is 2.

• The relationship is proportional, but the constant of proportionality cannot be determined.

Tags

CCSS.7.RP.A.2B

Graph a proportional line

with a constant of 4

Tags

CCSS.7.RP.A.2D

What is the constant of proportionality? Remember to simplify your answer.

• k = 90

• k = 1

• k = 9

• k = 10

Tags

CCSS.7.RP.A.2B