Question

Use the Substitution Method to solve the following system of equations.
x - 4y = 1
2x - 9y = 3

(-1, -3)

(-3, 1)

(3, 1)

(-3, -1)

Answer 1

so, so first you want to solve for x in the first equation. can you do that?

Answer 2

x=1+4y usin d 1st equation
after substitutin x in equation 2
v get
2(1+4y)-9y=3,2+8y-9y=3,-y=1, y=-1
usin d value of y v can get x by pluggin it in any of d equations.
x-4(-1)=1
x+4=1,x=3

Answer 3

oops srry x is -3