Question

Find x and y.

Answer 1

uve got two points on the line 0,0 and 5,3

Answer 2

so u get the line y=3x/5

Answer 3

now plug 15,y into this line to get y

y=3(15)/5
=9

Answer 4

what about the x?

Answer 5

now plug x,30 into the line
30=3x/5
x=50

Answer 6

got it??

Answer 7

wait so i divide by 30 and 5

Answer 8

multiply 30 by 5 and divide the whole thing by 3

Answer 9

oh i got it thank and can u help me with http://openstudy.com/groups/mathematics/updates/4dc4434fa5918b0b87418120