Use the substitution method to solve the system of equations. Choose the correct ordered pair. x + 3y = 9 y = x – 5

substitute y for x-5 getting x+3(x-5)=9
use distributive axiom getting x+3x-15=9
combine like terms getting 4x-15=9
add 15 to both sides getting 4x=24
divide by 4 getting: x=6
substitute x into y=x-5 getting y=6-5
combine like terms: y=1 x=6. that’s your answer.