Answer:
I belive its B,C
sorry if i'm wrong but hope it helps
Step-by-step explanation:
If you add the standard deviation to the average, it is 14.84. Because Marcus's score was lower than that, he will not receive a certificate.
I think this should be right for the reason and the calculation.
Answer: 
Step-by-step explanation:
Given
The equation of line is 
The line which is parallel to the given line is 
and shifted by 3 units down i.e. its y-intercept is 3 units below the given line

Answer:
The second graph near the bottom with a Y-intercept of -1
Answer:
y-intercept is 3
Step-by-step explanation:
We are given table
x: -8 -4 4 8
y: -3 0 6 9
We can select any two points


Firstly, we will find slope

now, we can plug values


now, we can use point slope form of line

we can plug values

now, we can solve for y

For finding y-intercept , we can plug x=0



So,
y-intercept is 3