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 t ime,

time=distancerate .

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.