Question

Y=_x+4
x + 2y =
8
How many solutions dose this linear system have

Answer 1

X=-1, y=4

Explanation:

`y = x + 4 \\ x + 2y = 8 \\ = = = = = = = = = = = = \\ y - x = 4 \\ x + 2y = 8`

by using eliminating property

`3y = 12 \\ y = (12)/(3) = 4`

by substitution

X=-1