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18-09-2020
Mathematics

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The midpoint of AB is M(-2,0). If the coordinates of A are (-1,8), what are the coordinates of B?

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unicorn3125 unicorn3125

20-09-2020

Answer:

B(-3, -8)

Step-by-step explanation:

[tex]x_M-x_A=x_B - x_M\qquad\quad\ \wedge\qquad y_M-y_A=y_B - y_M\\\\ -2-(-1)=x_B-(-2)\qquad\wedge\qquad 0-8=y_B -0\\\\ {}\qquad x_B=-3\qquad\qquad\wedge \qquad\qquad \ y_B=-8[/tex]

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