unit 1
4(2+6)-1
31
y=1/3x+2
y=-x-2
(-3,1)
√30
√30
3^2+6(x-1)
3+6x
y=4
2x-4y=8
(12,4)
3√24
6√6
-2x-5y=15
y=-2/5x-3
2x-2y=8
-2x+5y=-5
(10,3)
-√32
-4√2
-x+y=13
y=x+13
-2x-y=-9
4x+2y=18
infinite
√72
6√2
3x-9y=27
-y=1/3x+3
y=2x-5
3x-4y=12
no
√60
2√15