The vertex of a triangle is the highest point.
In this case it is A-y.
Hope this helps ;)
Answer:
r = 1/11
Step-by-step explanation:
16r-2r = -3r+6r+1
14r = 3r+1 (combine like terms)
11r = 1
r = 1/11
Answer and working out attached below. Hope it helps
Yes 28=7y as you said, then you do divide by 7 to get the y by itself which will get you the answer of y= 28/7