Match the terms to their definition. 1. lines that intersect to form right (90 degree) angles perpendicular lines 2. how the dependent variable changes with respect to the independent variable slope 3. a set of numbers that follow a pattern, with a specific first number sequence 4. the rate of change of a line; change in y over change in x; rise over run solution 5. a value or values of the variable that make an algebraic sentence true variable 6. an individual quantity or number in a sequence term 7. a letter or symbol used to represent an unknown rate of change