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Math1050 Ch04

Linear and Quadratic Functions

TermDefinition
Functions in the form f(x)=mx+b are called ___ functions. linear
Average rate of change of a linear function is ___ change in y / change in x = m
If a linear function has a positive slope it is said to be ___. increasing
If a linear function has a negative slope it is said to be ___. decreasing
If a linear function has a horizontal or 0 slope it is said to be ___. constant
Functions in the form f(x)=ax^2+bx+c are called ___ functions. quadratic
For a quadratic function, ___=-b/2a h
For a quadratic function, ___=4ac-b^2/4a k
For a quadratic function, ___=f(-b/2a) k, i.e., "What is y at h?"
For a quadratic function, if the discriminant b^2-4ac>0, the graph has ___ x-intercepts. 2
For a quadratic function, if the discriminant b^2-4ac=0, the graph has ___ x-intercepts. 1
For a quadratic function, if the discriminant b^2-4ac<0, the graph has ___ x-intercepts. 0
Created by: drjolley