Question

-3x - y = 15 y = -8x (x, y) = (0 ) 9,0

Answer 1

The solution is (x, y) = (3, -24)

Solution:

Given system of equations are:

-3x - y = 15 -------- eqn 1

y = -8x ------ eqn 2

We have to find solution of (x, y)

We can solve by substitution method

Substitute eqn 2 in eqn 1

-3x - (-8x) = 15

-3x + 8x = 15

5x = 15

Divide both sides by 5

x = 3

Substitute x = 3 in eqn 2

y = -8(3)

y = -24

Thus solution is (x, y) = (3, -24)