this week we started derivatives, which are pretty easy to do
the formulas:
f(x+dx)-f(x) is for slope of a secant line (d=delta)
-----------
dx
lim f(x+dx)-f(x)
dx->0 ------------ is slope of tangent line
dx
the slope of tangent line formula is used to find a derivative, tests can try to trick you by asking several different names that mean the same
first plug in the function given to the formula, after finding the solution to the formula, plug in the point given to find the slope of the equation
to see if its correct you check on the calculator
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