Algebra 1

The graph was made using graphing software. $y=-3x^2+18x$ vertex: $x=-b/2a$ $x=-(18)/2*(-3)$ $x=-18/-6 = 3$ $y=-3x^2+18x$ $y=-3(3)^2+18*(3)$ $y=-3*9+54$ $y=-27+54$ $y=27$ The blue line is the axis of symmetry, and the vertex is labeled.