What is the equation given the points (-5,-3) and (10,0)?

Question

anonymous · Answer

rise over run.  
Tell me what that is.  -5 is x1 , -3 is y1, 10 is x2 , 0 is y2

y2-y1/x2-x1

What is it.

anonymous · Answer

0-(-3) / 10 - (-5)
Correct?

anonymous · Answer

Is there another equation i can use?

aripotta · Answer

0-(-3) / 10 - (-5) was correct for the slope, but you have to simplify further

aripotta · Answer

what's 0 - (-3)?

anonymous · Answer

is the final equation 
y=1/5x-4

anonymous · Answer

3

aripotta · Answer

you were partially right the first time. it's y = -1/5x - 4

aripotta · Answer

oh wait..lemme see here again..

anonymous · Answer

rise over run gives you your slope.
Then .... use the following point slope form:

y - yinitial = m(x - xinitial)

yinitial = any one of your y points
xinitial = corresponding x to above
m = slope you found out

rearrange to isolate y on one side for y=mx + b

anonymous · Answer

no it's not negative -1/5x because on the worksheet it says the slope is 1/5x

aripotta · Answer

yea, sorry. i got mixed up on that :) you were right :)

anonymous · Answer

oh okay, thank you :)