Which function has the greatest rate of change?

Question

anonymous · Answer

find the slope of the lines. Slope is rise over run, and whichever linear function has the greatest slope has the greatest rate of change

anonymous · Answer

attachment

anonymous · Answer

@ChiefArnav

anonymous · Answer

hmm i would go with D

anonymous · Answer

ok thxs!

nnesha · Answer

first of all direct answer are not allowed hope you know that

nnesha · Answer

and second of all the answer you got with $\huge\color{green}{no}$ explanation..
are you sure is that right ???
@Letitgo34

nnesha · Answer

like i said before y=mx+b
here m is slope and rate of change mean slope 
your graph have negative  y-intercept which is -3 and then you are going up 4
and 4 is not the greatest slope in your answer choices

nnesha · Answer

AND IF YOU LOOK AT ANSWER CHOICES B 
THE ALREADY SOLVED THAT EQUATION FOR YOU
Y =5x+b
here 5 is m which mean 5 is slope 
now 
hope you can decide 
4 is bigger number of 5
hope you understand the process
again graph have slope which is 4