Answer:
Step-by-step explanation:
Given
Solving (a): 
We have:
Express f(x) as y
Swap x and y
Add 8 to 
Square both sides
Rewrite as:
Express y as:
To determine the domain, we have:
The original function is
The range of this is: 
The 
of the 
function is the 
of the 
function.
<em>Hence, the domain is:</em>
I would use subsitution
y=x-7
sub x-7 for every x
5x+2(x-7)=14
5x+2x-14=14
add 14 to both sides
7x=28
divide both sides by 7
x=4
sub
y=x-7
y=4-7
y=-3
x=4
y=-3
(4,-3)
Answer: Y= 4x - 14
Step-by-step explanation: Use the formula - ( x - x1) = m ( y-y1) [ m = slope = 4 , x1 = 3 , y1 = -2 ]
This gives you the answer and the step by step instructions to get the answer
