Lesson 9.1.1

Question 1

quadratic function

Answer 1

any function written in the form, y = ax^2 + bx + c, where a, b, and c are real number, and A doesn’t equal 0

Question 2

parabola

Answer 2

when the graph of a quadratic function is a curve

Question 3

vertex

Answer 3

the highest or lowest point of a parabola

Question 4

minimum

Answer 4

if a>0, the parabola opens upward, and the y-value of the vertex is minimum

Question 5

maximum

Answer 5

if a<0, the parabola opens downward, and the y-value of the vertex is maximum