Here are some words and phrases that, if you know them, will help you be more successful on the Regents Exams.

ALGEBRA:

Sum - Add

Difference - Subtract

Product - Multiply

Quotient - Divide

Rational - Any number that can be expressed as a fraction (example 4/3).

Irrational - A number that has a repeated decimal with no pattern (example 3.45678377284....)

Functions - Linear, Exponential, Absolute Value, Square Root, Piecewise

Piece-wise Function - A function with more than one relation

Input - The x values of a function.

Output - The y values of a function.

Domain - All possible x values of a function.

Range - All possible y values of a function .

Equivalent - The same.

Axis of Symmetry - the line that cuts a function in half, usually expressed as "x = __ "

Constant - A number by itself (with no variable)

Coefficient - The number next to a variable (example 4x).

Correlatiion - The relationship between two relations.

Correlation Coefficent - A number from -1 to 1 that tells you how closely the equation of the line of best fit models the data (closer to 1, positive correlation, closer to 0 no correlation, closer to -1, negative correlation)

Evaluate - to substitute a given number for a variable.

Function Rule - An equation that describes a function.

Intersection - Where two functions meet (on a graph or otherwise)

Line of best fit - The most accurate line that represents data on a graph.

System of equations - two or more equations.

System of inequalities - two or more inequalities.

Parabola - The graph of a quadratic function (x squared)

Radical - A number under a square root sign.

Rate of change - The slope of a function.

Reciprocal - flipping a fraction.

Slope - The rate of change of a function.

Slope formula - (y2 - y1) / (x2 - x1)

Monomial - A polynomial with one term.

Binomial - A polynomial with two terms.

Trinomial - A polynomial with three terms.

Vertex - The highest or lowest point on a parabola.

Vertical line test .- If you draw a vertical line through a relation at any point and the line only touches the relation one time then the relation is a function.

Y intercept - Where a function crosses the y axis.

X intercept - Where a function crosses the x axis.

Zeros of a function - Where a function crosses the x axis, or the value that will cause the function to equal zero.

Solutions of a function - The zeros of a function.