Special Functions and Graphs Algebra II …………… Sections 2.7 and 2.8
SWBAT identify, graph and write absolute value functions graph a function based on translations and transformations graph and find the value of a piecewise defined function graph the greatest integer function
Vocabulary absolute value function vertex transformation translation parent function reflection piecewise function step function
Absolute Value Function symmetric about y-axis for every (x, y) there is a point (-x, y) vertex - point where sides come together parent function - basic function, vertex is (0, 0)
General Equation vertex: (h, k) horizontal shift: x - h = 0 vertical shift: k shape of graph remains the same
Examples For each equation, state the vertex, describe the translation and sketch the graph
Transformations s hape of the graph changes stretch = more narrow shrink = wider vertical stretch: vertical shrink: reflection (about x-axis):
vertical ___________ by factor of ______ vertex is ___________ find point on each side of vertex
reflected about _____________ vertical _________ by factor of _______ vertex is __________ two more points
vertex is ________ reflected about _________ vertical __________ by factor of _______ two more points
Write the equation of the graph
Sketch additional graphs Use the graph to sketch (a) (b)
Piecewise Function defined by different expressions, each with a separate domain ex] Find f(-3) and f(1)
Graph the function:
Write a piecewise function from the graph
Write the piecewise function from the graph
Greatest Integer Function (step function) greatest integer not larger than the given value