Question #78376

Question

Question #78376

2 Answers

Impact of this question

1649 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-01-10T07:41:47

Coordinates of $Y a r e - 4, 7$ $Y are color (red)(-4, 7)$

Explanation:

Given $X (4, 5), M (0, 6)$ $X (4,5), M(0,6)$ and M is the midpoint of X & Y.

To find Y

$M_{x} = \frac{X_{x} + Y_{x}}{2}$ $M_x = (X_x + Y_x) / 2$

$Y_{x} = 2 M_{x} - X_{x} = (2 \cdot 0) - 4 = - 4$ $Y_x = 2M_x - X_x = (2*0) - 4 = -4$

Similarly,
$Y_{y} = 2 M_{y} - X_{y} = (2 \cdot 6) - 5) = 7$ $Y_y = 2M_y - X_y = (2*6) - 5) = 7$

Coordinates of $Y a r e - 4, 7$ $Y are color (red)(-4, 7)$

Answer 2 · 2018-01-10T08:37:35

$Y (- 4, 7)$ $Y(-4,7)$

Explanation:

$M is the midpoint of XY$ $"M is the midpoint of XY"$

$\Rightarrow - - \to X M = - - \to M Y$ $rArrvec(XM)=vec(MY)$

$rArrulm-ulx=uly-ulm$

$rArruly=2ulm-ulx$

$color(white)(rArruly)=2((0),(6))-((4),(5))$

$color(white)(rArruly)=((0),(12))-((4),(5))=((-4),(7))$

$rArrY=(-4,7)$

Science

Math

Humanities

... and beyond

Question #78376

2 Answers

Explanation:

Explanation:

Related questions

Impact of this question