1.
x-2y=5
y=x/2-2.52x+3*(x/2-2.5)=33.5x-7.5-3=03.5x-10.5=0
x=10.5/3.5x=33-2y=5
y=-2/2
y=-1x^2+y^2=3^2+(-1)^2=9+1=10
2.
5x+2y=-3
y=-2.5x-1.5
x-3*(-2.5x-1.5)=-4
8.5x+4.5+4=0
x=-8.5/8.5x=-1
5*(-1)+2y=-3-2+2y=0
y=2/2
y=1x^2-y^2=(-1)^2-1^2=1-1=0
3.
3x-2y=1
y=1.5x-0.5
4x-(1.5x-0.5)=-22.5x+0.5+2=0
x=-2.5/2.5x=-1
3*(-1)-2y=1
y=-4/2y=-2y^2-x^2=(-2)^2-(-1)^2=4-1=3
1.
x-2y=5
y=x/2-2.5
2x+3*(x/2-2.5)=3
3.5x-7.5-3=0
3.5x-10.5=0
x=10.5/3.5
x=3
3-2y=5
y=-2/2
y=-1
x^2+y^2=3^2+(-1)^2=9+1=10
2.
5x+2y=-3
y=-2.5x-1.5
x-3*(-2.5x-1.5)=-4
8.5x+4.5+4=0
x=-8.5/8.5
x=-1
5*(-1)+2y=-3
-2+2y=0
y=2/2
y=1
x^2-y^2=(-1)^2-1^2=1-1=0
3.
3x-2y=1
y=1.5x-0.5
4x-(1.5x-0.5)=-2
2.5x+0.5+2=0
x=-2.5/2.5
x=-1
3*(-1)-2y=1
y=-4/2
y=-2
y^2-x^2=(-2)^2-(-1)^2=4-1=3