I don't know if u can see it, but there.
X=12
Y=15
Z=20
Parallel lines have the same slope but different y intercepts
Slope: 4
y=4x+b
this is the new equation, plug in the point
-10=4(-1)+B
-10=-4+B
add 4
-6=B
Y intercept= -6
slope; 4
The answer is 20/3 first you set a variable x and 30x=200 divid both side by 30 and get the final answer
The line x - y = 5 passes through the point (0, -5)