Question

Use substitution to solve the linear system of equations.

x=4
-y=1/2x

(4, -2)
(-2, 4)
(4, 2)
(2, -4)

pls help A$AP

Answer 1

(4, - 2 )

Explanation:

Given the 2 equations

x = 4 → (1)

- y =
`(1)/(2)` x → (2)

Substitute x = 4 into (2)

- y =
`(1)/(2)` × 4 = 2 ( multiply both sides by - 1 )

y = - 2

Solution = (4, - 2 )