COLLEGE ALGEBRA WGU C278 QUESTIONS AND ANSWERS

What are the order of operations? The order of operations can be remembered as PEMDAS: Parenthesis, Exponents, Multiplication, Division, Addition, and Subtraction. When graphing straight lines what is the variable X called? The Independent Variable Brainpower 0:02 / 0:15 When graphing straight lines what is the variable Y called? The Dependent Variable A solution set All the ordered pairs of real numbers that satisfy an equation consisting of two variables such as x or y A Point A graph of an ordered pair The horizontal line on a Cartesian plane X axis The Vertical line on a Cartesian plane Y axis Cartesian Plane Defined by two perpendicular number lines: the horizontal x-axis and the vertical y-axis.Using these axes, we can describe any point in the plane using an ordered pair of numbers. Power Rule for Exponents (am)n=amn To raise a power to a power, multiply the exponents. Power Rule for Products Power Rule for Products: (ab)n=anbn To raise a product to a power, raise each factor to that power. The Power Rule of Fractions To raise a fraction to a power, raise the numerator and denominator to that power. Natural Numbers 1,2,3,4, etc. No zero, Negatives, or fractions. Whole Numbers Natural numbers plus zero. Integers Whole numbers, natural numbers, and negative numbers. Rational Numbers Integers written as non-zero fractions, Terminating decimals, negative fractions, and repeating decimals. Irrational numbers Infinate non-repeating decimals, including pie and some square roots. Real Numbers All numbers including whole numbers, rational numbers, irrational numbers, integers, natural numbers, repeating and non-repeating decimals, fractions, negatives, pie, and square roots.