Across
- 2. A matrix that does not have an inverse; its determinant is 0.
- 3. A statistical method used to fit a linear model to a given data set.
- 5. A function whose rule is given by a trigonometric ratio.
- 7. In a right triangle, the cotangent of angle A is the ratio of the length of the die adjacent to A to the length of the side opposite A. It is the reciprocal of the tangent function.
- 8. A measure of dispersion of a data set. The standard deviation σ is the square root of the variance.
- 9. In a right triangle, the cosine of angle A is the ratio of the length of the side adjacent to angle A to the length of the hypotenuse. It is the reciprocal of the secant function.
- 10. A function of the form f(x)=ab^x, where a and b are real numbers with a ≠ 0, b > 0, and b ≠ 1.
- 12. A matrix with the same number of rows as columns.
- 13. A transformation that pulls the points of a graph horizontally away from the y-axis or vertically away from the x-axis.
- 15. The inverse of the relation consisting of all ordered pairs (x,y) is the set of all ordered pairs (y,x). The graph of an inverse relation is the reflection of the graph of the relation across the line y = x.
- 17. A rectangular array of numbers.
- 19. A point on a graph that is not connected; appears as a hole in the graph.
- 21. A real number associated with a square matrix. The determinant of A= [a b ^c d] is |A|=ad-bc.
- 22. The matrix of the coefficients of the variables in a linear system of equations.
- 24. A transformation that pushes the points of a graph horizontally toward the y-axis or vertically toward the x-axis.
Down
- 1. Ratio of the lengths of two sides of a right triangle.
- 4. A matrix where each entry is the opposite of each entry in another matrix. Two matrices are additive inverses if their sum is the zero matrix.
- 5. In a right triangle, the ratio of the length of the leg opposite ∠A to the length of the leg adjacent to ∠A.
- 6. A square matrix such that the product of it and another matrix forms an identity matrix.
- 11. A method of solving systems of linear equations by using determinants.
- 14. A set of three numbers that can be used to locate a point (x,y,z_ in a three-dimensional coordinate system.
- 16. Binomials of the form a+b and a-b. The terms are the same; the signs before b are opposites.
- 18. A line that divides a coordinate plane into two half-planes.
- 20. A fraction that contains one or more fractions in the numerator, the denominator, or both.
- 22. In a right triangle, the cosecant of angle A is the ratio of the length of the hypotenuse to the length of the side opposite A. It is the reciprocal of the sine function.
- 23. If n is a positive integer, then n factorial, written n!, is n* (n-1) * (n-2) * ... 2 * 1. The factorial of ) is defined to be 1.