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)

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)

aravindg · Answer

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

beccab003 · Answer

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

beccab003 · Answer

I think its 3

anonymous · Answer

Why did you pick 3?

aravindg · Answer

You have y-y1 in equation here y1=3 

So it should be y-3 instead of y+3

beccab003 · Answer

Cause the 3 is positive and the 1 is negative

anonymous · Answer

$$y-y _{1}=m(x-x _{1})$$ point-slope form

aravindg · Answer

3 is positive but we have y-y1

y-3

anonymous · Answer

^

beccab003 · Answer

So is it number 2

anonymous · Answer

Yes

beccab003 · Answer

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

anonymous · Answer

Look at the formula |dw:1398644600313:dw|