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Mathematics 15 Online
OpenStudy (anonymous):

Fan + Medal

OpenStudy (anonymous):

In the diagram, the coordinates of endpoints A and B are (-3, 9) and (9, 5). What are the coordinates of point H?

OpenStudy (anonymous):

OpenStudy (anonymous):

(-1.5, 8.5) (0, 8) (1.5, 7.5) (6, 6) (7.5, 5.5)

OpenStudy (gorv):

let the coordinate of H(x,y)

OpenStudy (gorv):

first tell me ...u know about slope??

OpenStudy (anonymous):

I know what it is, I don't remember the formula

OpenStudy (gorv):

AB is a line ...agree?

OpenStudy (anonymous):

Yes

OpenStudy (gorv):

slope of line will be same at all the point on line ...agree??

OpenStudy (anonymous):

Yes

OpenStudy (gorv):

slope = y coordinate /x cordinate their difference

OpenStudy (gorv):

\[\frac{ y2-y1 }{ x2-x1 }\]

OpenStudy (gorv):

remember it ??

OpenStudy (gorv):

@CaseyCarns

OpenStudy (anonymous):

\[\frac{ 5-9 }{ 9 - -3 } \]

OpenStudy (gorv):

yeah very good

OpenStudy (gorv):

--3=+3

OpenStudy (anonymous):

I got -4/12

OpenStudy (gorv):

5-9=-4 so slope=-4/12=-1/3 agree??

OpenStudy (anonymous):

Yes!

OpenStudy (gorv):

now find using A and H

OpenStudy (gorv):

and B and H

OpenStudy (anonymous):

H is slope?

OpenStudy (gorv):

using A and H..it willl be =(y-9)/(x+3)

OpenStudy (anonymous):

I got -6/2

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