Vocab #1

1. a graph of a set of data pairs (x, y) used to determine whether there is a relationship between the variables x and y
3. square root of -1
5. number that produces a specified quantity when multiplied by itself
8. the ratio of vertical change to horizontal change; rise over run; slope
9. the process of finding the factors of a polynomial
10. the sum of two monomials
11. type of equation whose graph is a parabola
14. two lines in the same plane that intersect to form a right angle because they have opposite reciprocal slopes

2. a measure, denoted by r, of how well a function fits a set of data pairs (x,y)
4. an expression that is either a number, a variable, or the product of a number and one or more variables
6. the number that describes a square matrix
7. a rectangular arrangement of numbers, called elements, in rows and columns
12. the expression under the radical sign in the quadratic formula
13. one of two or more integers that can be exactly divided into another integer
15. shape of the graph of a quadratic equation