Question

A line passes through the point (-1,3) and has a slope of -2. What is the equation of the lind in slope intercept form?

A: y=2x+5
B: y=-2x+5
C: y=2x+1
D: y=-2x+1

Please Explain your work! Thanks

Answer 1

Hello,

The answer to this problem is D

Now to find the answer we first have to know the formula for slope intercept.

y-y1=m(x-x1)

So now that we know the formula we have to solve;

y-3=-2(x-(-1))

y-3=-2(x+1)

Now we add +3 to get the 3 on the other side.

y-3=-2x-2

+3     +3

Y=-2x+1

So the answer is D, Have a great day!

Answer 2

answer is D, y-y1=-2(x-x1)

                    y-3=-2(x-(-1))

                    y-3=-2(x+1)

                    y-3=-2x-2

add 3 to both sides, y=-2x+1.