you pick any # for x or y and work from there
ex. x=-5 now the question is 3(-5)+5y=15
multiply 3 and -5 to get -15
add 15 to both sides and the question is now 5y=30
divide both sides by 5 and the answer is y=6
X intercept: -5 Y intercept: +3
3x+12x = 15 15x = 15 x = 1
The lines are parallel.
x=5
4x+7-3x = 15 4x-3x = 15-7 x = 8
no
x intercept = 5 y intercept = 15
X intercept: -5 Y intercept: +3
3x+12x = 15 15x = 15 x = 1
The lines are parallel.
x+5 = 3x+15 x-3x = 15-5 -2x = 10 x = -5
x=5
4x+7-3x = 15 4x-3x = 15-7 x = 8
x = 2
51.
15
x = 1