Positive correlation – when the
points are going up from left to right
(as x increases, y increases)
Negative correlation – when the
points are going down from left to
right (as x increases, y decreases)
No correlation – when points are
scattered all over the (x and y have no
apparent relationship)
The vertex of a quadratic is the
minimum or maximum value.
Graph the function on the calculator
and Press menu – Analyze Graph –
Minimum.
Parallel lines have
no intersection – no
solution.
Since 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒 = 𝑟𝑎𝑡𝑒 𝑥 𝑡𝑖𝑚𝑒,
𝑡𝑖𝑚𝑒 =
𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒
.
𝑟𝑎𝑡𝑒
Slope is the rate of change of a
function
Draw a diagram.
𝑃𝑒𝑟𝑖𝑚𝑒𝑡𝑒𝑟 = 2(𝑙𝑒𝑛𝑔𝑡ℎ) + 2(𝑤𝑖𝑑𝑡ℎ)
Substitute the expressions for Perimeter, length, and width and solve
for x. Substitute what you get for x into the expressions for length
and width.
Graph the equations and match with
the given graph.
Graph the equation and compare the
table with the answer choices.
Select a number for c that is greater
than 3, and substitute it into the
given expression to calculate the
value. Then compare to the
expressions in the steps.