Let’s review the graph of a quadratic function and what we know about it vertex y-intercept Equation for axis of symmetry x-coordinate of the vertex Open up or open down? Max or Min
State whether the graph of each quadratic function opens up or down and also if it has a max or min
For the quadratic function f(x)=x²+2x Find the y-intercept Find the equation for the axis of symmetry Find the x-coordinate of the vertex Make a table of values that includes the vertex Graph the quadratic function Go to graph
Finding Max or Min without graph Write a, b, and c for the quadratic function Find the x-coordinate for the vertex Plug this value into the function If graph opens up, result is minimum If graph opens down, result is maximum
Determine whether each function has a max or min value. Then determine the value of the max or min.