So, put your "x's" together first and then your intercepts. That should answer your question :)
-3/5 they have opposite slopes so they would never touch but are parallel.
Answer: 63
Step-by-step explanation: 21+21+21
To find the x intercept, sub in 0 for y and solve for x
y + 12 = 3(x - 9)
0 + 12 = 3x - 27
12 = 3x - 27
12 + 27 = 3x
39 = 3x
39/3 = x
13 = x.....so ur x int is 13 or (13,0) <==
and if u wanted to find the y int, u could sub in 0 for x and solve for y
