30 points and brainliest for the right answer :) I would like to know how to do this, so an explanation would be nice :P Thanks for the help!

Answer:
Below
Step-by-step explanation:
● (a)
Let's determine the difference between the outputs of any two inputs that are one unit apart.
Let m be that difference.
2 and 3 are one unit apart since when you substract 2 from 3 you get 1.
● 3-2 = 1
Let's calculate m.
The output of 2 and 3 are respectively 45 and 53.
● m = 53 - 45
● m= 8
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Let's determine the difference between the outputs of any two inputs that are 2 units apart.
Let m' be that difference
3 and 1 are 2 units apart since when you substract 1 from 3 you get 2.
● 3-1 = 2
The outputs of 1 and 3 are respectively 37 and 53.
● m'= 53-37
● m' = 16
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Let's determine the difference between the outputs of two inputs that are 3 units apart.
Let m" be that difference
0 and 3 are 3 units apart since when you substract 0 from 3 you get 3.
● 3-0 = 3
Let's calculate m":
The outputs of 0 and 3 are respectively 29 and 53
● m" = 53-29
● m" = 24
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● m = 8
● m'= 16
● m" = 24
Notice that all these values are multiples of 8.
● 8 = 8×1
● 16 = 8×2
● 24 = 8×3
Notice that each time the difference m is multiplied by the units that are between the inputs.
This is explained by the fact that the function is a linear one.
When the input interval grows the difference between the outputs grows two.
Answer:
Step-by-step explanation:
find the equation of the linear function in the form of y=mx+b
m=y2-y1/x2-x1 =-3+11/-4+5=8
y=8x+29 ( when x=0, y=b=29)
out put : -3 and -11 -3-(-11)=8 which is 1 unit
out put : 21 and 5 21-5=16 which is 2 unit (2*8)
output :53 and 29 53-29=24 which is 3 units (3*8)
ratio of change = f(b)-(f(a)/b-a
at point -3 and -11 : f(-3)-f(-11)/-4+5=-3+11/1=8
at point 21 and 5 : 21-5/-1+3=16/2=8
the graph always increasing and always equal 8