Question 271328
1.) First to make our lives easier, let us right this equation in standard form; ie: y=function of x --> in our case lets first subtract 15x from both sides
 --> {{{-5y=-15x+45}}}

Next let's divide both sides by -5
--> {{{y=3x-9}}}

Now we are in standard form.

2.) To find the y-intercepts (where the graph crosses the y-axis) we simply plug 0 in for x and solve for y.
--> {{{y=(3*0)-9}}} --> {{{y=-9}}}; this tells us our graph crosses the y-axis at -9.

3.) To find the x-intercepts (where the graph crosses the x-axis) we simply plug 0 in for y and solve for x.
--> {{{0=3x-9}}} --> {{{9=3x}}} --> {{{x=3}}}; this tells us our graph crosses the x-axis at 3.

If you plot these two points [(0,-9) & (3,0)] and draw a line between them, you have the graph of your equation

GRAPH: 
{{{graph(300, 200, -10, 10, -10, 10, 3x-9)}}}