Understanding Algebra Crossword Puzzle

QUESTIONS LIST: variable : a letter used to represent a number, expression : numbers, symbols and operators grouped together that show the value of something, function : a relationship or expression involving one or more variables, irrational number : any number that cannot be written as a quotient of integers, rational number : any number that can be written as a quotient of integers, proportion : an equation or other statement which indicates that two ratios are equal, ratio : this shows the relative sizes of two or more values, range : the set of all images of the elements of the domain of a function, constant : a quantity whose value does not change, integers : any member of the set {-4, -3, -2, -1, 0, 1, 2, 3, 4}, equation : a statement that the values of two mathematical expressions are equal , y intercept : where a straight line crosses the y axis of a graph, domain : the set of numbers which are permissible replacement values for the independent variable of a function.