Answer:
You can plug in the pair into the equation
Step-by-step explanation:
You take the ordered pair and plug it into the equation. If it matches, that is your solution
For example: y=2x+1 . Pair: (1,3)
Plug 3 for y and 1 for x. 3=2(1)+1 is 3
Answer:

Step-by-step explanation:
Given

Required
The polynomial function
If a function has a, b and c as its zeros, the function is:

So, we have:


Open the inner brackets

Expand the difference of two squares

Expand

Answer:
z+11y/5 = x
Step-by-step explanation:
Since you are solving for x, you want to isolate the variable. You do that by adding 11y to both sides, which cancels out the -11y. From that you should have z+11y = 5x. To cancel out the 5x you need to divide both sides by 5 to get z+11y/5 = x. Hope this helps :)