Proportional Relationship from an Equation

What does k represent in the equation y = kx?

• constant for preparation

• constant of proportionality

• kangaroos

• krispy kreme

Tags

CCSS.7.RP.A.2C

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

• k = .45; p = .45w

• k = .22; p = .22w

• k = 45; p = 45w

• k = 22; p = 22w

Tags

CCSS.7.RP.A.2B

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• 1/14

Tags

CCSS.7.RP.A.2B

The equation y=6.5x represents a proportional relationship. What is the constant of proportionality?

• x

• 1/6.5

• 6.5

• y

Tags

CCSS.7.RP.A.2B

Which equations represents the relationship between pounds of food (y) and bags of dog food (x)?

• y=10x

• y=3x

• y=3x+1

• y=x+3

Tags

CCSS.8.EE.B.5

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

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The total number of washcloths, y, contained in, x, packages. If there were 8 packages, which of the following equations best represents this graph?

• y = 8 + x

• y = 8 - x

• y = 8x

• y = 8/x

Tags

CCSS.8.EE.B.5

A graph needs to be a straight line and goes through _____ to be proportional.

• The origin

• The y-intercept

• The y-axis

• The x-axis

Tags

CCSS.7.RP.A.2D

A graph needs to go through _____ to be proportional.

• The origin

• The y-intercept

• The y-axis

• The x-axis

Tags

CCSS.7.RP.A.2D

The graph shows the relationship of the amount of time (in seconds) to the distance (in feet) run by a jaguar.

Is the distance run by the Jaguar proportional to the time? Why or why not?

• Yes because the graph creates a straight line that passes through the origin.

• No because the graph does not create a straight line.

• No because the graph does not pass through the origin.

Tags

CCSS.7.RP.A.2D