Answer
Elena must have substracted 1/2x from both sides of the equation.
Lin must have multiplied both sides of the equation by 2
Explanation
The equation given is
![\frac{1}{2}x+3=\frac{7}{2}x+5](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dx%2B3%3D%5Cfrac%7B7%7D%7B2%7Dx%2B5)
For Elena to have arrived at
![3=\frac{7}{2}x-\frac{1}{2}x+5](https://tex.z-dn.net/?f=3%3D%5Cfrac%7B7%7D%7B2%7Dx-%5Cfrac%7B1%7D%7B2%7Dx%2B5)
Then Elena must have substracted 1/2x from both sides of the equation.
That is;
![\begin{gathered} \frac{1}{2}x+3=\frac{7}{2}x+5 \\ \text{Substracting }\frac{1}{2}x\text{ from both sides of the equation will give Elena first step} \\ \frac{1}{2}x+3-\frac{1}{2}x=\frac{7}{2}x+5-\frac{1}{2}x \\ 3=\frac{7}{2}x-\frac{1}{2}x+5 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cfrac%7B1%7D%7B2%7Dx%2B3%3D%5Cfrac%7B7%7D%7B2%7Dx%2B5%20%5C%5C%20%5Ctext%7BSubstracting%20%7D%5Cfrac%7B1%7D%7B2%7Dx%5Ctext%7B%20from%20both%20sides%20of%20the%20equation%20will%20give%20Elena%20first%20step%7D%20%5C%5C%20%5Cfrac%7B1%7D%7B2%7Dx%2B3-%5Cfrac%7B1%7D%7B2%7Dx%3D%5Cfrac%7B7%7D%7B2%7Dx%2B5-%5Cfrac%7B1%7D%7B2%7Dx%20%5C%5C%203%3D%5Cfrac%7B7%7D%7B2%7Dx-%5Cfrac%7B1%7D%7B2%7Dx%2B5%20%5Cend%7Bgathered%7D)
For Lin to have arrived at
![x+6=7x+10](https://tex.z-dn.net/?f=x%2B6%3D7x%2B10)
It shows Lin must have multiplied both sides of the equation by 2
That is;
Are there answer choices i really dont under stand the question
Answer:
(5,2)
Step-by-step explanation:
you need to go two half way from the farthest point from the left to the right so that would be from 2 to 8 which is a distance of 6 so you go halfway over and that puts you at 5 then you find the distance from the lowest point to the highest point which goes from -2 to 6 with a distance of 8 so that means you go up for which puts you at 2 which means the center of the triangle is at the point (5, 2)