Ineed to find the slope, vertical intercept and horizontal intercept of these 3 linear functions:
y=5x-15
y=7-x
4x=2y=12

These are in y=mx+b form where m=slope
sometimes b=0

vertical intercept means the y-intercept and the horizonatl intercept is the x intercept so the x intercept is when y=0 and the y intercept is when x=0 so the first one is

y=5x-15
slope=5
y-intercept=-15
x-intercept=3

y=7-x
this can be written as
y=-1x+7
slope=-1
y-intercept=7
x-intercept=7

4x=2y=12
we must get it into slope intercept form
divide the whole thing by 2x=y=12
 we can disregard the 12 and get
2x=y or y=2x+0
slope=2
y-intercept=0
x-intercept=0

Y=-2x-6 is the answer

It will cost $540i think