Hello, please consider the following.
a) You need to replace x by -1.

b) You need to replace x by 2t and simplify.

c) You need to replace x by t-2 and develop, and simplify.

Thank you.
Answer:
3x - y = -28
Step-by-step explanation:
Given the equation y-4 = 3(x+8), distribute and simplify to get the Standard Form.
y-4 = 3(x+8)
y - 4 = 3x + 24
y = 3x + 28
-3x + y = 28
Standard form does not allow the coefficient of x to be negative so multiply the equation by -1.
3x - y = -28
Answer:
24,28,32,36,40,.....
Step-by-step explanation:
It’s multiples of 4
For this case we have that by definition, the equation of a line in the point-slope form is given by:

Where:
m: It is the slope of the line and
is a point through which the line passes.
We have the following equation of the slope-intersection form:

Where the slope is 
By definition, if two lines are perpendicular then the product of their slopes is -1.
Thus, a perpendicular line will have a slope:

Thus, the equation will be of the form:

Finally we substitute the given point and we have:

Answer:
Option B
Are you trying to solve the function operation? If so, your solution is 4 I believe. I don't really have a lot of info on this, but I hope this helps. If not, feel free to comment below and I'll see what I can do to help you further on this. Thanks and good luck!