 | Term | Definition |
| |
ratio |
A comparison of two numbers using division. |
| |
rate |
A ratio that mcopares two quantities with different kinds of units |
| |
unit rate |
A rate with a denominator of 1. |
| |
proportion |
An equation stating that two ratios are equal. |
| |
percent discount |
a percent of change in the amount by which the regular price of an item is reduced |
| |
Y-axis |
the vertical number line in a coordinate plane. |
| |
X-axis |
the horizontal number line in a coordinate plance. |
| |
quadrants |
one of the 4 regions into which the 2 perpendicular number lines of the coordinate planes separate the plane |
| |
Absolute Value |
the distance away from zero on the number line |
| |
coefficient |
the numerical factor of a term that contains a variable |
| |
integer |
the whole numbers and their opposites |
| |
constant |
a number with no variable |
| |
exponent |
in a power, the number that tells how many times the base is used as a factor |
| |
origin |
the point at which the x-axis and the y-axis intersect in a coordinate plane |
| |
like terms |
terms with exactly the same variable factors in a variable expression |
| |
coordinate grid |
a plane in which a horizontal number line and a vertical number line intersect at their zero points. Also called a coordinate plane |
| |
ordered pair |
a pair of #s used to locate a point in the coordinate plane. |
| |
negative integers |
numbers that are less than zero |
| |
positive integers |
numbers greater than zero |
| |
x-coordinate |
the first # of an ordered pair |
| |
y-coordinate |
the second # of an ordered pair |
| |
prime number |
a whole # greater than 1 that has exactly 2 factors, 1 and itself |
| |
composite number |
a whole # greater than 1 that has more than 2 factors |
| |
factor tree |
a diagram shwoing the prime factorization of a number. factors branch out from the previous factors untill all of the factors are prime numbers |
| |
prime factorization |
expressing a composite number as a product of prime numbers, e.g., 63 is 3 x 3 x 7 |
| |
discount amount |
the amount by which the regular price of an item is reduced |
| |
sale price |
regular price minus the discount |
| |
sales tax |
an additional amount of money charged on items and collected by the government that people buy |
| |
graphing +/- numbers |
the process of placing a point on a number line at its proper location |
| |
interest |
the amount paid or earned for the use of money |
| |
principal |
the amount of money deposited or invested |
| |
interest rate |
percent at which the interest is earned |
| |
base |
in a power, the # used as a factor |
| |
powers |
numbers expressed using exponents, e.g. 3/2 is read three to the second power or three squared |
| |
squared |
a number multiplied by itself, e.g. 4/2 is 4 x 4 |
| |
cubed |
the product in which a number is a factor three times, e.g., 2 cubed is 8 or 2 x 2 x 2 |
| |
percent proportion |
compares part of a quantity to the whole quantity using a percent |
