The last resort because you have no more options
Subtracting whole numbers does not include subtracting negative numbers, whereas when subtracting integers you can include negative numbers.
Drivers should not drink and drive. I hope this helps if not hopefully someone helps out
Absolute value
at x=2, the absolute value thing is positive
do this one

the derivitive is

so the slope at x=2 is

=-3
a point is (2,2)
point slope form
y-y1=m(x-x1)
y-2=-3(x-2)
or
y=-3x+8
das is de equation