Test review

Harrison said...
slope intersept form: slope 3/5; y-intercept (0,-8)
y=mx+b y=3/5x+-8
This is helpful to remember while graphing inequalities.
Also remember: y=x - solid line w/ no shadeing
y>x - dashed line, all above shaded
y y>_ - solid line, all above shaded
y<_ - solid line, all under shaded
{(-4,2),(-4,-2),(1,5),(1,-5)}
Domain={-4,1} Range={2,-2,5,-5} this is not a function.

Varies directly y=kx
Varies inversly y=k/x y decreases as x increases
Varies jointly y=kxz - the two variables are x and y
Combined variation y=kw/h
Remember: k is a constant, it will never change

Domain: any value of x variables
Range: any value of y variables
A relation represents a function only if all x values are unique.
while graphing a relation, plot the points, don't connect them.
f(x)= just a formal name for Y

OK - lots of fun stuff to help you on the test, I'm sure most of what I just said has already been posted but this is my summery of things you may want to look at before tomorrow.