y=-2,5x
x=2
y=-2,5*2=-5
y=1 1/2x
x=6:1 1/2=4
y=6
y=3,5x
x=-2:3.5=4/7
y=-2
y=-3 5/10x
x=7:(-3 5/10)=-2
y=7
y=-2,5x
x=2
y=-2,5*2=-5
y=1 1/2x
x=6:1 1/2=4
y=6
y=3,5x
x=-2:3.5=4/7
y=-2
y=-3 5/10x
x=7:(-3 5/10)=-2
y=7