Write an equation of the line, in point-slope form, that passes through the two given points.

points: (–2, 15), (9, –18)

Question

Write an equation of the line, in point-slope form, that passes through the two given points.

points: (–2, 15), (9, –18)

radar · Answer

This may help.  m = slope.  $$x _{1},y _{1}=  P1$$$$x _{2},y _{2}= P _{2}$$$$m=(y _{2}-y _{1})/(x _{2}-x _{1})$$

anonymous · Answer

so the answer is .. y – 15 = –3(x + 2) ?

radar · Answer

First step find slope m:
Let me see if you are on the right track.

anonymous · Answer

slope = -3

radar · Answer

m=(15 - (-18)) /(-2-9)
m=33/-11=-3
That is what you have.  Is there a requirement to what form the equation must be ?  Slope Intercept or Standard?
You have basically solved the problem.

anonymous · Answer

point slope form

radar · Answer

Slope intercept form would be:  y=-3x - 6 + 15 or y=-3x + 9

radar · Answer

I think you have it in the point slope form.

radar · Answer

Yes your answer was in the correct point slope form according to my book.

anonymous · Answer

thanks

radar · Answer

Point slope form is:
y-y1 = m(x-x1)
Great work and good luck with your studies.