X intercept is 12
Y intercept is 9.
To find answer just cover up the one you don't want.
For x it would be -3x=-36
For y it would be 4y=-36
The answer should be 16√5
Answer:

Step-by-step explanation:

Expand brackets.


Apply radical rule : 


Answer:
Step-by-step explanation:
B is correct: We Divide it (the coefficient b) by 2 and square the result.