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# Algebra Chapter 3 and 4 Vocabulary

Author: Collin House
Across
The first number in an ordered pair; it tells the distance to move right or left from the origin. (0,0)
A function has exactly one output for each input, what test can you use to prove it is a function.
A number produced by raising a base to an exponent.
The set of all possible input values.
In a right triangle, the sides that include the right angle; in an isosceles triangle, the pair of congruent sides.
In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs.
A rule that relates to two quantities so that each input value corresponds to exactly one output value.
A graph of the set of ordered pairs that are solutions of the equation.
A rational or irrational number.
The value substituted into an expression or function.
A pair of numbers that can be used to locate a point on a coordinate plane.
The vertical axis on a coordinate plane.
Down
A plane formed by the intersection of a horizontal number line called the x-axis and the vertical number line called the y-axis.
A method of writing very large numbers of very small numbers by using the power of 10.
A number that cannot be expressed as a ratio of two integers or as a repeating or terminating decimal.
The value that results from the substitution of a given input into an expression or function.
The second number in an ordered pair; it tells the distance to move up or down from the origin.
The x-and y-axes divide the coordinate plane into four regions. Each region is called the
The number that indicates how many times the base is used as a factor.
A square of a whole number.
A right triangle, the side opposite the right angle.
The set of all possible output values.
The point where the x-axis and the y-axis intersect on the coordinate plane.
When a number is raised to a power, the number that is used as a factor.
The horizontal axis on a coordinate plane.