Question

Solve the following system by using graph paper or graphing technology.

3x – 2y = 7
9x – 6y = 3

What is the solution to the system?



No Solutions

Infinite Solutions

(3, 2)

(3, –2)

Answer 1

right, if you get both of them in terms of y so 2y = 3x - 7
and 6y = 9x -3. the second can be written as 2y = 3x - 1.
so then the first is y = 3/2(x) - 7/2
the second is y = 3/2(x) - 1/2
Plot those 2 lines, if they cross, the co-ordinates of the intersection is the solution. If they don't there are no solutions.

Answer 2

I think that should work