If a is to the right of b on the number line, which of the following must be true

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.

35/2 is it i think maybe

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

brainliest is always apprectiated