Question

Choose the correct equation of a line, in point-slope form, given the point (-1,3) and a slope, m, of 1/2.
1) y+1=1/2(x-3)
2) y-3=1/2(x+1)
3) y+3=1/2(x-1)
4) y-1=1/2(x-3)

Answer 1

Looks familiar? did u try to look at my answer?

Answer 2

Yes, but it didn't make sense and I asked follow up questions but you didn't respond. What is the answer?

Answer 3

I think its 3

Answer 4

Why did you pick 3?

Answer 5

You have y-y1 in equation here y1=3

So it should be y-3 instead of y+3

Answer 6

Cause the 3 is positive and the 1 is negative

Answer 7

\[y-y _{1}=m(x-x _{1})\] point-slope form

Answer 8

3 is positive but we have y-y1

y-3

Answer 9

^

Answer 10

So is it number 2

Answer 11

Yes

Answer 12

But how come its x+1 when 1 is negative?

Answer 13

Look at the formula