Question

Solve the system of equations using any method. Show and explain all work

y+3x=4
y-8x=4

Answer 1

From solving the two equations by using substitution method, we get the value of X and y to be 0 and 4 respectively.

Answer 2

(0, 4 )

Explanation:

y + 3x = 4 → (1)

y - 8x = 4 → (2)

subtract (2) from (1) term by term to eliminate y

(y - y) + (3x - (- 8x)) = 4 - 4

0 + (3x + 8x) = 0

11x = 0 ⇒ x = 0

substitute x = 0 into (1) and solve for y

y + 3(0) = 4

y + 0 = 4

y = 4

solution is (0, 4 )