Words to know

Write the letter of the definition next to the matching word as you work through the
lesson. You may use the glossary to help you.
midpoint

A. the point on a graph at which the graph
crosses the x-axis
quadratic function

B. in a parabola, the point at which the
function goes from increasing to
decreasing or vice versa
vertex

C. a point on a line segment that is
equidistant from the two endpoints
x-intercept

D. a second-degree polynomial function that
can be written in the form ax? + bx + c,
where a, b, and c are real constants and a
does not equal zero