Constant of Proportionality equations

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, expressed in the equation y = kx.

Tags

CCSS.7.RP.A.2B

Front

How do you convert an equation to y = kx form?

Back

To convert an equation to y = kx form, isolate y on one side of the equation by performing the same operation on both sides.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

If 2y = 4x, what needs to happen to have an equation in y = kx form?

Back

Divide both sides by 2.

Tags

CCSS.6.EE.C.9

Front

What is the constant of proportionality for the points (2,10), (4,20), (10,50)?

Back

5

Tags

CCSS.7.RP.A.2B

Front

What is the constant of proportionality for the points (10,2), (20,4), (50,10)?

Back

1/5

Tags

CCSS.7.RP.A.2B

Front

If a car travels 400 miles in 10 hours, what is its speed?

Back

40 miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How far does a car travel in 2 hours if it travels 400 miles in 10 hours?

Back

80 miles.

Tags

CCSS.6.RP.A.3B

Front

How far does a car travel in 6 hours if it travels 400 miles in 10 hours?

Back

240 miles.

Tags

CCSS.6.RP.A.3B

Front

What is the formula to find the constant of proportionality from two points (x1, y1) and (x2, y2)?

Back

k = y/x, where y is the output and x is the input.

Tags

CCSS.7.RP.A.2B

Front

If y = 3x, what is the constant of proportionality?

Back

3

Tags

CCSS.7.RP.A.2B