Question

Which choice is an equation of the line written in point-slope form?

HINT: Use the answer to help you with the next two questions. You will be using the same graph.

A: y+1=12(x−1)

B: y−1=12(x+1)

C: y−1=2(x+1)

D: y+1=2(x−1)D:

Answer 1

Answer: The answer is C

Step-by-step explanation: If y plus 1 is 2 then y is one which is the difference between the second number of the dots on the graph

Answer 2

`y-1=(1)/(2) (x+1)`

Explanation:

Point slope formula:

`y-y_(1) = m(x-x_(1) )`

Find the slope using

`m = (y_(2)-y_(1) )/(x_(2) -x_(1) )\\m = (2-1)/(1--1) \\m = (1)/(2)`

Plug the slope and points into the point slope formula

`y+1=(1)/(2) (x-1)`