Which pair of ratios forms a proportion ? Answer choices:
A. 2/3 and 4/9 B. 5/15 and 4/12; C. 4/12 And 6/24 D. 1/9; and 9/10

A / B = X / Y       proportionate fractions

For a proportion to hold the ratios must be equal or

A Y = B X

Looking at B    5 / 15 = 4 / 12    

Both equal 1/3   and 5 * 12 = 15 " 4

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}