Across
- 2. This fraction is formed of two fractional expressions, one on top of the other.
- 4. Directly, but with two or more variables
- 5. The variable is "on top".
- 6. It looks sort of like two mirrored parabolas, with the two "halves" being called "branches".
- 7. A polynomial fraction, and anything you could do with regular fractions you can do with rational expressions.
- 8. The number that relates two variables that are directly proportional or inversely proportional to one another.
- 9. Scattered points
- 12. A straight line
- 14. Vertical lines which correspond to the zeroes of the denominator of a rational function.
- 15. An equation that is not equal
Down
- 1. Opposite
- 3. If the degree of the numerator is exactly one more than the degree of the denominator (so that the polynomial fraction is "improper"), then the graph of the rational function will be, roughly, a slanty straight line with some fiddly bits in the middle.
- 6. Horizontal lines which correspond to the zeroes of the denominator of a rational function.
- 10. Variable is on the bottom.
- 11. You can tell by tracing from each x to each y. There is only one y for each x; there is only one arrow coming from each x.
- 13. Instead of each of the data points contributing equally to the final average, some data points contribute more than others.