Answer:
y=11, x=3
Step-by-step explanation:
Substitute y=4x-1:
4x-1=x+8
Isolate x for 4x-1=x+8:
4x-1=x+8
Add 1 to both sides:
4x-1+1=x+8+1
Simplify:
4x=x+9
Subtract x from both sides:
4x-x=x+9-x
Simplify 3x=9
Divide both sides by 3:
3x/3=9/3
Simplify:
x=3
For y=4x-1
Substitute x=3
y=4*3-1
Simplify
y=11
The solution to the system of equations are:
y=11,x=3
