Math Exam

A letter that stands for a number.

P (parentheses - grouping symbols), E (exponents), M (multiplication), D (division), A (addition), S (subtraction).

Whole numbers and their opposites.

An equation without a solution.

The Distance of a number from zero on the number line.

The plane formed by two number lines that intersect at their zero points. The horizontal number line is the x-axis. The vertical number line is the y-axis. The two axes meet at the origin, O (0,0), and divide the coordinate plane into four quadrants.

For any numbers a, b, and c, a(b+c)=ab+ac and a(b-c)=ab-ac.

A factor of a nonzero integer is an integer that divides the nonzero integer with remainder zero.

A rational number is any number you can write as a quotient of two integers a over b, where b is not zero.

Scientific notation is a way of expressing a number. A number is expressed in scientific notation when it is written as the product of a number greater than or equal to 1 and less than 10, and a power of 10.

A ratio is a comparison of two quantities by division.

How much one of a group things would be if you only the price of the group.

An equality of two ratios.

How much smaller or larger something is than an identical object.

A ratio that compares a number to 100.

The percent something increases or decreases from its original amount. Difference of new and original over original.

A function is a relationship in which each member of the domain is paired with exactly one member of the range. A number of the domain is an input and the related number of the range is an output.

A line is a series of points that extends in opposite directions without end.

A closed plane figure with at least three sides.

Two things are exactly the same.

A transformation that moves points the same distance and in the same direction.

When a shape is the same on both sides.

A transformation that flips a figure over a line of reflection.

A transformation that turns a figure about a fixed point, called the center of rotation. The angle measure of the rotation is the angle of rotation.

The number of square units a figure encloses.

a2+b2=c2

An arrangement of items in a particular order. You can use the notation nPr to express the number of permutations of n objects chosen r at a time. Keyword: different.

A group of items in which the order of the items ins not important. You can use the notation nCr to express the number of combinations of n objects chosen r at a time. To solve nPr over rPr.

The average. Add up all data then divide by the amount of numbers added together.

The middle number.

The number that shows up the most.

A monomial or a sum or difference of monomials.

A real number, a variable, or a product of a real number and variables with whole number exponents.

Any function of the form y=b^x, where b > 1. The graph of the function curves upwards as input values increase.

Any function of the form y=b^2, where 0 < b < 1. The graph of the function slopes downward as input values increase.

y=mx+b, m= rise over run or (y1-y2) / (x1-x2)

• A plot of ordered pairs.
• Positive Correlation: as y increases, x increases as well.
• Negative Correlation: as y increases, x decreases (opposites).
• No Correlation: no relationship.

• Simple: I=prt (interest = principal x rate per year x time in years).
• Compound: B=p(1+r)^n (balance = principle (1 + the rate for each interest period) ^ number of interest periods.

In order of decreasing exponents.

A graph that displays data by using x's above a number line.