Question

20 POINTS!!!

I need help with a math question. I need to graph the system of equations for these two equations:
-15x-5y=45
-2x+6y=6

I need the solutions to the x and y variables as well as a graph for each line. Thanks so much!

Answer 1

Try graphing using the x-intercept and y-intercept.

-15x - 5y = 45

Put in x = 0 to get -5y = 45, making y = -9. Point (0, -9) is on the line.

Put in y = 0 to get -15x = 45, making x = -3. Point (-3, 0) is on the line.

-2x + 6y = 6

Put in x = 0 to get 6y = 6, making y = 1. Point (0, 1) is on the line.

Put in y = 0 to get -2x = 6, making x = -3. Point (-3, 0) is on the line.

(We've actually stumbled on the solution since (-3, 0) is on both lines!)

Graph the two lines using the points found above.

The solution is x = -3, y = 0.