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Gekata [30.6K]
4 years ago
9

Vector AB has initial point (4,3) and terminal point (-5,1) . Determine the coordinates of the terminal point of AC if AC= -2AB

.
Mathematics
1 answer:
Liula [17]4 years ago
3 0
Vector AB can be calculated:
AB = <bx-ax , by-ay>
AB= <-5-4 , 1-3>
AB= <-9 , -2>

AC = -2*AB
AC = -2 *<-9 , -2>
AC = <18 , 4>

Now we can calculate coordinates of point C:
AC = <cx-ax , cy-ay>
<18 , 4> = <cx-4 , cy-3>
18=cx-4
cx=22
4=cy-3
cy=7

Coordinates of the terminal point C (22,7).
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