13 terms

tballardTEACHER

axis of symmetry

a fold or line that divides a parabola into two matching halves x = -b/2a

maximum

the y-coordinate of the vertex of a parabola that opens downward

minimum

the y-coordinate of the vertex of a parabola that opens upward

parabola

the graph of a quadratic function; a U-shaped curve that opens up or down

quadratic function

a function that can be written in the form y=ax^2+bx+c, where a does not equal zero.

standard form of a quadratic function

a quadratic function written y=ax^2+bx+c, where the degrees(exponent value) decrease from left to right.

vertex

the highest or lowest point on a parabola; the axis of symmetry intersects the parabola at the vertex

zero-product property

for every real number a and b, if ab=0, then a=0 or b=0.

discrimant

the quanity b^2-4ac - its value can be used to determine the number of soluctions of a quadratic equation.

quadratic formula

x= negative b, plus or minus the square root of b squared minus 4ac, divided by 2a.

initial height

the c-value in a quadratic function (the constant)

initial velocity

the b-value in a quadratic function (coefficient of x)

solution

where the parabola crosses the x- axis also called x-intercepts or zeros