Chapter 2 

an input to an output, 45(J)

all x variables, input ex: (x),y

all y value, output ex: x,(y)

2 variables that for a line 

ex: (p)=56g, p is dependent

ex:p=56(g), 6 is independent

how steep a line is

y-y=m(x-x)

y=mx+b

visual test to determine the curve of the graph