Question

Y= -5x +10
y= -2x-2
solve by substituions

Answer 1

x = 4, y = -10

Explanation:

if both expressions equal 'y' then you can solve by setting them equal to each other:

-5x + 10 = -2x - 2

-3x + 10 = -2

-3x = -12

x = 4

find 'y':

y = -5(4)+10

y = -20 + 10

y = -10