First, find the gradient/slope:
Use slope formula:
m=(y2-y1)/(x2-x1)
=(11-5)/(3-1)
=6/2
=3
Then use the line equation formula:
y=mx+c
You can substitute (1,5) if you like, also must substitute the slope as well!
5=3x1+c
c=2
Then find the full equation, which gives you the answer:
y=3x+2
The answer tour question is D
Answer:
E. (The function is exponetial)
Step-by-step explanation:
We look at the output values and subtract them from their previous value to see it's slope.
6-2 = 4
12-6 = 6
4 ≠ 6, meaning that the slope is not constant.
4 < 6, meaning that the slope is increasing, meaning the function is exponential.
Step-by-step explanation:
A(-5,1) and B(0,4)

X1=0 , Y1=4 X2= -5 , Y2=1


y - 4 = ⅗(x-0) ==> y - 4 = ⅗ X ==> y = ⅗ X + 4
<u>C</u> is the answer