Question

-4x + y = 9
- 4x +9y= 17
Solve by elimination

Answer 1

Answer:

(x , y) = (-2 , 1)

Step-by-step explanation:

multiply both sides by -1

sum the equations vertically to eliminate at least one variable

divide both sides by -8

substitute the value of y into the equation

now solve  for x using that y=1