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

x= 1 +4y
x= (3 + 9y)/2

(3 + 9y)/2 = 1 +4y
3 + 9y = 2 + 8y
y = -1

Then plug that in back two one of those equations.

Answer 2

No point in just giving you the answer if they are asking you to use the substitution method

Answer 3

i dont need to show my work just the answer