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Algebra 2

Terms and Definitions for Algebra 2 Math

TermDefinition
Cube Root A variable (number) raised to the power of 3, or a number which produces a given number when cubed.
Square Root A variable (number) raised to the power of 2, or a number which produces a quantity when multiplied by itself.
Hypotenuse The largest side to a triangle, or the diagonal to the 90 degree angle (if there is one).
Irrational Numbers Not rational numbers; cannot be written as a fraction of 2 integers.
Legs The other sides of a triangle, make the right angle. The two sides that are not the hypotenuse.
Pythagorean Theorem Describes the relationship between the side lengths of right triangles; can be used to find the hypotenuse or vice versa. (a^2 + b^2 = c^2)
Rational Numbers Numbers that can be written as a fraction of 2 integers.
Base (of an exponent) The base is the "main" number under an exponent.
Exponent The value a number, integer, or variable is raised to.
Power of Ten When a number is the base, and 10 is the exponent.
Scientific Notation Way to write very large or very small numbers. Written by multiplying a number between 1 and 10 by a power of 10.
Negative Association Relationship between 2 quantities where one decreases as the other increases.
Positive Association Relationship between 2 quantities where one increases as the other increases.
Outlier A data value (graphed, or not) that is far from the other values in the data set.
Relative Frequency Relative frequency of a category tells us the fraction or percent of the data set.
Cone A three-dimensional figure that tapers from a circular base to a point.
Cylinder A three-dimensional figure like a prism, but with circular bases.
Cube A three-dimensional figure put together by 6 equal sides.
Dependent Variable A variable representing the output of a function.
Independent Variable A variable representing the input of a function.
Function A rule that assigns exactly one output to each possible input.
Radius A line segment that goes halfway from the center of a circle to any other point on that same circle.
Sphere A three-dimensional figure in which all cross-sections are circles.
Volume The number of cubic units that fill a three-dimensional region without any gaps or overlaps.
Diameter A full line segment that goes from the center of a circle all the way to any other point on that same circle.
Circumference The distance around the boundary of a circle.
Reflection A geometrical transformation where an object is flipped to create a mirror or a congruent image. (Any quadrant)
Quadrant Region of a graph that is obtained when two axes intersect each other.
Cartesian Plane Formed by the intersection of two coordinate axes that are perpendicular to each other.
Translation A geometrical transformation where every part of a shape or object is moved all in the same direction.
Radical The sign to be used for squaring and cubing.
In-Equality A relation making a non-equal comparison between two numbers.
Congruent/Congruence Angles or lines that are exactly the same size.
Linear An equation that makes a straight line when graphed/an equation in which the highest of a variable is always 1.
Non-Linear An equation that is not a straight line when graphed/a system where the change of an output is not proportional to the change of the input.
Proportional When quantities have the same relative size.
Probability The possibility of something, or the possibility of a mathematical event to occur.
Formula Fact or rule written with mathematical symbols.
Slope A number that describes both the direction and steepness of a line. (change in y over change in x)
PEMDAS Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. In this order, is how to solve equations.
Quantity A property that can exist as a multitude or magnitude. "More" "Less" and "Equal".
Variable A symbol for a value we don't know yet.
Reciprocal The inverse of a number or value.
Parallel Always the same distance apart and never touching.
Perpendicular Lines that intersect at a 90 degree angle, forming a square corner.
Distributing Something being separated equally, a pair of parentheses indicates a number to be distributed.
Domain All of the values that go into a function, the x values.
Range Difference between the highest and lowest values, the y values.
Commutative Property The property in which it doesn't matter if you rearrange the order of numbers that are being multiplied or added.
Created by: 27eva.dutton
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