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Across 1. the first number in an ordered pair is the x-coordinate, and the second number is the __________. 3. the horzontal axis in a coordinate plane is the x-axis, and the vertical axis is the _______. 8. a _____ ______ is two simple inequalities joined by "and" or "or". (2 words) 9. the input variable is called the independent variable, and the output variable is called the ______ _______. (2 words) 13. the _____ (0,0) is the point in a coordinate plane where the axes intersect. 14. the _____ of a nonvertical line is the ratio of the vertical change (the rise) to the horizontal change (the run). 16. the horizontal axis in a coordinate plane is the _____, and the vertical axis is the y-axis. 17. the set of values is the _____, and the set of output values is the range. 19. the set of values is the _____, and the set of output values is the range. 21. two lines in a plane are _______ if they intersect to form a right angle 22. a relation is _____ provided there is exactly one output for each input.

Down 2. the input variable is called the ______ ______, and the output variable is called the dependent variable. (2 words) 4. an ordered pair (x,y) is a _____ of an equation of an equation is true when the values of x and y are substituted into the equation. 5. a _______ ________ is formed by two real number lines that intersect at a right angle. (2 words) 6. inequalities such as x < 1 and 2n - 3 > 9 are examples of ______ ______ in one variable. (2 words) 7. a _____ is a mapping, or pairing, of input values with output values. 10. two lines in a plane are _____ if they do not intersect and they have the same slope. 11. the _____ _____ of a number x, writeen lxl, is the distance the number is from 0 on a number line. (2 words) 12. the ______ of an inequality in one variable consists of all points on a real number line that corresponds to solution of the inequality. 15. the first number in an ordered pair is the __________, and the second number is the y-coordinate. 18. a _______ is one of the four parts into which the axes divide a coordinate plane. 20. a ______ of an inequality in one variable is a value of the variable that makes the inequality true.