click below
click below
Normal Size Small Size show me how
PHMS7_PACH1
7th Grade Pre Algebra Words
Question | Answer |
---|---|
algebra | a branch of mathematics dealing with symbols |
algebra expression | an expression that contains sums and/or products of variables and numbers |
coordinate plane | another name for coordinate system |
coordinate system | a coordinate system is formed by the intersection of two number lines that meet at right angles at their zero points, also called a coordinate plane |
counterexample | an example that shows conjecture is not true |
deductive reasoning | the process of using facts, properties, or rules to justify reasoning or reach valid conclusions |
defining a variable | choosing a variable and a quantity for the variable to represent in an equation |
domain | the domain of relation is the set of all x-coordinates from each pair |
equation | a mathematical sentence that contains an equal sign (=) |
evaluate | find the numerical value of an expression |
function | a function is a special relation in which each element of the domain is paired with exactly one element in the range |
function rule | the operation performed on the input of a function |
function table | a table organizing the input, rule, and output |
graph | a dot at the point that corresponds to an ordered pair on a coordinate plane |
numerical expression | a combination of numbers and operations such as addition, substraction, multiplication, and division |
order of operations | the rules to follow when more than one operations is used in an expression. Think PEMDAS ***MD left to right and ***AS left to right |
ordered pair | a pair of numbersused to locate any point on a coordinate plane |
origin | the point at which the number lines intersect in a coordinate system |
properties | statements that are true for any numbers |
range | the range of a relation is the set of all y-coordinates from each ordered pair |
relation | a set of ordered pairs |
scatter plot | a graph that shows the relationship between two set of data |
simplify | to write an expression in a simpler form |
variable | a placeholder for any value |
x-axis | the horizontal number line which helps to form the coordinate system |
x-coordinate | the first number of an ordered pair |
y-axis | the vertical number line wich helps to form the coordinate of a point where a graph crosses the y-axis |
y-coordinate | the second number of an ordered pair. |