Question

Solve the system of equations.

3x – 7y = 5
9y = 5x + 5

Answer 1

do you know any methods to solve the systems?

Answer 2

I would use the matrix and my graphing calculator if technology is allowed.
I would use elimination if I had to solve it by hand.

Answer 3

ok tell Pebbles I send my regards

Answer 4

one method
\[3x - 7y = 5\]
\[-5x + 9y = 5\]
5 = 5
3x -7y = -5x + 9y
8x =16y
x = 2y
substitute in the first eqn
3(2y) -7y = 5
(6-7)y =5
y = -5
x = 2(-5) = 10
check by substituting your x and y values in either of original eqn
3(-10) -7(-5) =5
-30 + 35 = 5
5 = 5

Answer 5

Just one note: When checking, you need to check both equations. The solutions must work for both equations.

Answer 6

x=-10 y=-5 I doublecheck the solution with the matrix