All you have to do ia solve for y
A=3.......................
Step-by-step explanation:
everything is directly proportional, so your are going to do cross muliplication
y= -24/7
The coordinates of vertex B' is
.
<h3>
How to calculate the coordinate of point by reflection</h3>
A point if reflected across the line
by means of the following formula:
(1)
Where:
- Original point
- x-Coordinate of point P
- Resulting point
If we know that
and
, then the coordinates of the vertex is:
![P'(x,y) = (-2, 4) + 2\cdot [(-2,-2)-(-2,4)]](https://tex.z-dn.net/?f=P%27%28x%2Cy%29%20%3D%20%28-2%2C%204%29%20%2B%202%5Ccdot%20%5B%28-2%2C-2%29-%28-2%2C4%29%5D)
![P'(x,y) = (-2, 4) +2\cdot (0, -6)](https://tex.z-dn.net/?f=P%27%28x%2Cy%29%20%3D%20%28-2%2C%204%29%20%2B2%5Ccdot%20%280%2C%20-6%29)
![P'(x,y) = (-2, 4) + (0,-12)](https://tex.z-dn.net/?f=P%27%28x%2Cy%29%20%3D%20%28-2%2C%204%29%20%2B%20%280%2C-12%29)
![P'(x,y) = (-2, -8)](https://tex.z-dn.net/?f=P%27%28x%2Cy%29%20%3D%20%28-2%2C%20-8%29)
The coordinates of vertex B' is
. ![\blacksquare](https://tex.z-dn.net/?f=%5Cblacksquare)
To learn more on reflections, we kindly invite to check this verified question: brainly.com/question/1878272