Finding the Vertex
What is the vertex of the quadratic function f(x) = (x – 8)(x - 2)?

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

x = 12

y = 1

for the points!