Here you should use the equation y - y1 = m(x - x1), where (x1, y1) are a point and m is the slope:
y - 1 = -3(x - 2)
I'm not sure if perhaps there's an error in the question or the re-typing but none of the answers stated above match the solution.
ans is c it is simple c only meet the need of questions
Answer:
final answer is 6
Step-by-step explanation:
Given 
To find the difference quotient use formula



Now plug it in the formula




6
Hope this will help..........