hamas241 hamas241

24-05-2016
Mathematics

Answered

The end points of line segment AB are A(3,–12) and B(6,k).

What is the value of k if the slope of line segment AB is –2?

Pls. show me how to do it

Verified Answer :

helphelp123 helphelp123

24-05-2016

(x,y)
(3,-12)
(6,k)

y=mx+b
sloope=m

y=-2x+b
sub known point
(x,y)
(3,-12)
x=3
y=-12
-12=-2(3)+b
-12=-6+b
-6=b

y=-2x-6

(6,k)
k=-2(6)-6
k=-12-6
k=-18

k=-18

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