Proportions With Variables

If n/8 = 3/4, find the value of n.

• 4

• 6

• 12

• 10

The result of multiplying the numerator of one ratio by the denominator of another. If the products are equal, the ratios are proportional.

• slope

• rate of change

• Cross Products Property of Proportions

• independent variable

A rational number that describes the proportional relationship between two variables, represented by the letter k in the equation y=kx.

• constant of proportionality

• denominator

• rate

• ordered pair

Solve for b 

• 8

• 17/12

• 4/3

• 1/8

Solve the equation for x:

• 17

• 16

• 15

• 14

Solve the proportion

• x = 3

• x = -3

• x = 1

• x = -1

Solve for k

• 165

• 17

• 1/17

• 1/165

Write the following statement as a mathematic expression with variable(s):

> Ben has 35 crisps. That is 7 times more than Ryan has.

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Solve for x

• x=6

• x =1/6

• x = 7

• x=9

Solve for x 

• x = 1/10

• x = 10

• x = 4

• x = 5