Question

Solve the system of equations.

5x - y = 3 and -10x + 2y = -6
(Points : 1)

(0, -3)


(-3, 0)


(3, 12)


no solution


infinitely many solutions

Answer 1

5x - y = 3...................(1)
-10x + 2y = -6...........(2)

multiply (1) by -2:
-10x + 2y = -6 ........(3)
add (2) and (3):
4y = -12
y = -3

plug y=-3 in (1)
5x -(-3) = 3
5x = 0
x = 0

solution (0,-3)

Answer 2

infinitely many solutions

Answer 3

divide the second equation by -2 and the equations are the same