Answer:
4.
or -5 (It's a negative slope)
5. 0 (It's a horizontal line)
6. 
Formula: 
Remember that the slope intercept formula is:
y = mx + b
m is the slope
b is the y-intercept
so...
m = 0
b = -2
^^^Plug these numbers into formula
y = 0*x - 2
y = 0 - 2
y = -2
Hope this helped!
~Just a girl in love with Shawn Mendes
13846+8273636
= 8287482
8287482-3763
=8283719
8283719x8273736
=6.8537304^13
8.9 x 10^-5 in scientific notation