Question 178814
x-y=4.......eq 1
x-2y=10.....eq 2
:
subtract all terms in eq 2 from terms in equation 1:
:
x terms will be eliminated because x-x=0. We are left with -y+2y=4-10
:
{{{highlight(y=-6)}}}
:
take y's found value and plug it back into either eq 1 or 2 . I chose eq 1
:
x-(-6)=4
:
x+6=4
:
{{{highlight(x=-2)}}}
:
{{{graph(300,300,-10,10,-10,10,x-4,(1/2)x-5)}}}