Answer:
Slope=2
Step-by-step explanation:
Remember the equation: y=mx+b
m: is your slope
b: is your y-intercept
the answer is m = 2
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
hope this helps
j = -9
y=4x+4
It has the biggest slope of the equations of 4, and increases the most.