Functions
These functions add or subtract at a constant rate.
linear functions
A pair of numbers that describes the location of a point on a graph. (x,y)
coordinate
What is the formula for a linear function?
y = mx+b
The shape made by a quadratic function.
parabola
Which direction does the quadratic function open?
f(x)=3x2+5x-1
Find the slope of the line that passes through
(2,2) and (4, -2)
m=-2
The point where the function touches the y axis.
y-intercept
DAILY DOUBLE
The minimum or maximum point of a parabola.
vertex
The highest point of a parabola when it opens down.
vertex
Find the vertex of the quadratic function.
f(x)=2(x-4)2 +5
(4,5)
These functions model things like the shot of a basketball, a homerun hit, or a satellite dish.
quadratic functions
The point(s) where two or more lines cross. The point is also a solution to each line it touches.
The equation of the parent function of a quadratic.
f(x)=x2
The central intersection of the x and y axis on a graph.
origin
DAILY DOUBLE
Find the line of symmetry of the quadradic function.
f(x)=3x2+6x-8
x=-1
These functions grow by the power of two. (They always have x2 in them.)
quadratic functions
DAILY DOUBLE
The root of a function, or where it touches the x axis.
x-intercept or zero
DAILY DOUBLE
Any coordinate that satisfies an equation or sits on the line of that equation.
solution
When something is made up of exactly mirrored parts on either side of an imaginary line, it is...
symmetrical
Where does the quadratic function intersect the y axis?
f(x)=-4x2-7x+5
(0,5)