Solve the system by substitution y=10x y=-3x-104

Answer: (-8, - 80)

Step-by-step explanation:

y = 10x

y = - 3x - 104

Substitute "y" with "10x" into the second equation, then solve for x:

10x = - 3x - 104

13x = - 104 added 3x to both sides

x = - 8 divided both sides by 13

Next, substitute - 8 for x into the first equation to solve for y:

y = 10 (-8)

= - 80