Answer:
The solution is the point [tex](-1,3)[/tex]
Step-by-step explanation:
we have
[tex]y-4x=7[/tex] ------> equation A
[tex]2y+4x=2[/tex] ------> equation B
Adds equation A and equation B
[tex]y-4x=7\\2y+4x=2\\-------\\y+2y=7+2\\3y=9\\y=3[/tex]
Find the value of x
Substitute the value of y in the equation A
[tex]y-4x=7[/tex]
[tex]3-4x=7[/tex]
[tex]4x=3-7[/tex]
[tex]4x=-4[/tex]
[tex]x=-1[/tex]
The solution is the point [tex](-1,3)[/tex]
