Which of the following is vertex form?
y=aly + k)2- h
y= a(x + h)2-k
y=a(x - h)2+k
y=aly-k)2 +h

Look at this and see if it

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.