linear equations in one variable

equation

a mathematical sentence stating that two expressions are equal

solution

values of the variables that make an equation true

solving the equation

finding the value of the variable in an equation

isolating the variable

getting the variable alone on one side of the equation

addition property of equality

the same term is added to both sides of an equation

multiplication property of equality

if each side of an equation is multiplied by the same number

word problems

written explanations of real-world situations and questions

conditional equations

equations that are true for some values of the variable but not others

identities

equations that are true no matter what value is substituted for the variable

contradiction

an equation that is always false no matter what value is substituted for the variable

dependent variable

variable on the right, a variable isolated on the left side of the literal equation

subject

the literal equation

independent variable

variables on the right side of a literal equation that are used to determine the value of the variable on the left

I=prt

simple interest formula

d=rt

distance formula

debt

money owned to another

appreciate

increase in value

depreciate

decreases in value