Question

Solve the system equations . 3x - 4y = -10 and 5x + 8y = -2 . A. (1,2) B. (2,1) C. (1,-2) D. (-2,1) ?

Answer 1

3x-4y=-10
5x+8y=-2

Multiply first equation by 2
6x-8y=-20
5x+8y=-2 Now add these equations!

11x+0=-22
11x=-22
....
Will you show me how to solve the rest of this?

Answer 2

Just a moment

Answer 3

x = -2

Answer 4

Yep Yep! :)

Answer 5

\[3(-2)-4y=-10\] I just replaced x with -2 in one of the equations
do you think you can solve for y

Answer 6

y = -4 ?

Answer 7

-6-4y=-10
+6 +6
-4y=-4
y=1

Answer 8

nice try though alexis! :)