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The midpoint of AB is M(0, –4). If the coordinates of A are (-8, -7), what are the coordinates of B? Please answer ASAP :( 10 points
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The midpoint of AB is M(0, –4). If the coordinates of A are (-8, -7), what are the coordinates of B?

Please answer ASAP :( 10 points

User Savad KP
by
5.4k points

1 Answer

3 votes

Answer:

B(8, -1)

Explanation:

M(0, -4) being the midpoint of AB means that
x_M-x_A=x_B-x_M


0-(-8)=x_B-0\\\\x_B=8

and
y_M-y_A=y_B-y_M


-4-(-7)=y_B-(-4)\\\\-4+7=y_B+4\\\\y_B=3-4\\\\y_B=-1

User Dauezevy
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