Please help me graph the equation:

1.y=4x+6

2.y=x+8

3.Use the intercepts to graph the equation.
3x+5y=15

visit wolframalpha.com and enter

plot y=4x+6 , y=x+8

The easiest points to plot on a line are the intercepts, where x=0 or y=0. In this case, they would be

(0,3) and (5,0)

plot those two points and draw a line through them.