Complete the square to solve
f(x)=x^2+6x-7

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Write an equation for the function that includes the points (2,100)and (3,100)

3x + 4y = 5 x- 3y = -7 solve by substitution