The vertex is (7,-50)
***rewrite in standard form***

Move variables to the left by adding their opposites to both sides. Eliminate the opposites.

Move constants to the right by adding their opposites to both sides. Eliminate the opposites.

Collect the like terms by subtracting their coefficients and numbers.

Calculate the sum or difference. Extract the negative sign from the expression. Add the numbers.

Divide both sides of the equation by 5 and calculate the quotient.
Answer:
Step-by-step explanation:

Answer:
39in.
Step-by-step explanation:
due to scale, cant be 15, as that would be the same length as other side
cant be 91 otherwise it wouldnt be similar if it had the same length as blue triangle which has 39 not 15 as the top side
It's supposed to be (0,-3) but I guess your answer should be A