Answer:
Slope is -5/3, the y intercept is 5
Explanation:
If you want to find cordinates you first have to solve the equation so that it is in the form mx+b=y
solve for y
5x+3y=15
-5x -5x
3y =-5x+15
3y/3 = -5x/3+15/3
y=-5/3x+5
or -5/3x+5=y
Now you know that the slope is -5/3 and the y intercept is 5
Start for 5 on the cordinate plain and go down 5 since it is negative and go to the right 3.
after you get to the bottom right of the graph you go back to 5 and just do the exact opposite of what you did above.
so go up 5 and go to the left 3 and continue until you get to the top left of the graph.