Question

2x - y - 4 = 0
3x + y - 9 = 0

What is the solution set of the given system?
a){(6/5, 13/5)}
b){(13/5, 6/5)}
c){(5, 6)}
d){(6, 5)}

Answer 1

adding both equations we have,
5x-13=0
5x=13
x=13/5
putting this value of x in 2x-y-4=0
2(13/5)-y-4=0
26/5-4=y
y=(26-20)/5
y=6/5
so {13/5,6/5} is the solution set.