Algebra 1- Unit 8 vocab

Vocabulary words for unit 8 vocabulary in Algebra 1

average rate of change

the slope of the line through (a, f(f)) and (b, f(b)) of a function y = f(x) between x = a and x = b

axis of symmetry

the vertical line that divides a parabola into two symmetric parts

even function

a function y = f(x) is even when f(-x) = f(x) for each x in the domain of f

intercept form

a quadratic function written in the form f(x) = a(x - p)(x - q), where a does not equal 0

maximum value

the y-coordinate of the vertex of the graph of f(x) =ax² + bx + c when a < 0

minimum value

the y-coordinate of the vertex of the graph of f(x) =ax² + bx + c when a > 0

odd function

a function y = f(x) is odd when f(-x) = —f(x) for each x in the domain of f

parabola

the U-shaped graph of a quadratic function

vertex form of a quadratic function

a quadratic function written in the form f(x) = a(x - h)² + k,where a does not equal 0

vertex of a parabola

the lowest point on a parabola that opens up or the highest point on a parabola that opens down

zero of a function

an x-value of a function f for which f(x) = 0; an x-intercept of the graph of the function