Math, Unit 2 Quiz
h
h
relation
set of ordered pairs
Domain
set of all possible x values
range
set of all possible y values
function
a relation where every input has one output
discrete function
function of specific points (has gaps)
continuous function
function of continuous points forming a straight or curvy line (have no gaps)
verticle line test
draw a verticle line that only crosses the function once
in a function what do we replace y with
f(x)
which variable is x
independent
which variable is y
dependent
rate of change
a ration that shows how much one quantity changes relative to another quantity
what is time almost always
x
average rate of change
change of y over change of x
slope
the measure of a line's steepness
linear function
y=mx+b a straight line
what must their be in a linear function
a y and an x
what can't there be in a linear function
- variable w/ exponent
- products of variables
- variables in the denominator of a fraction
standard linear form
Ax + By = C
intercept
when a line crosses zero
when x=0 what is y
the y-intercept
when y=0 what is x
then it's the x intercept
what form can use intercepts to graph
standard
parallel lines have
the same slope
perpendicular lines have
opposite reciprocal slopes