A function or relation that is defined.

A set of all second elements of ordered pairs.

 Take all possible values of x and plug them into the equation.

A test used to determine whether a relation is a function or not

Slope is the measure of steepness of a line

the equation of a straight line in the form y = mx + b 

he equation of a straight line in the form y − y1 = m(x − x1)

 x-intercept is the point where the curve crosses the x-axis 

 y-intercept is the point where the curve crosses the y-axis

A variable that depends on one or more other variables

A variable in an equation that may have its value freely chosen without considering values of any other variable.