Help PLSSSSS BRAINLIST Rate of change on both of them pls look down below

Answer:
[tex]\huge \boxed{\mathrm{4}} \\ \huge \boxed{\mathrm{2}}[/tex]
Step-by-step explanation:
Rate of change is another term for the slope.
rate of change = slope = (change in y)/(change in x)
Function A:
y = mx + b (m = slope)
y = 4x - 3
Function A has a slope of 4.
The rate of change for function A is 4.
Function B:
Take two points.
(-1, 0) and (1, 4)
slope = (y2 - y1)/(x2 - x1)
slope = (4 -0)/(1 - -1)
slope = 4/2 = 2
The rate of change for function B is 2.