Math 8 Vocab Crossword

5. form: A linear equation format y = mx + b where m gives the slope and b gives the y‑coordinate where the line crosses the y‑axis.
8. (in an expression): A single part of an expression separated by + or −, which can be a number, variable, or a product of both.
9. theorem: A rule for right triangles stating the sum of the squares of the legs equals the square of the hypotenuse: a^2 + b^2 = c^2.
11. Two figures that are identical in shape and size; one can be mapped to the other by rigid motions.
13. The steepness of a line, calculated as the change in y divided by the change in x.
15. number: A number that cannot be written as a fraction of integers; its decimal expansion never repeats or ends.
16. A whole number without fractional or decimal parts, including negatives and zero.
19. equation: An equation that produces a straight-line graph, typically written in the form ax + by + c = 0.
20. The y-coordinate of the point where a graph meets the y‑axis (where x = 0).

1. All possible input (x) values that a function can accept.
2. The measure of how much space a three-dimensional object contains (e.g., for a rectangular prism V = length × width × height).
3. number: A number that can be expressed as a fraction p/q where p and q are integers and q ≠ 0.
4. A way to express a number as parts out of 100; percent means “per hundred.”
6. relationship: A relationship between two quantities where their ratio is constant; its graph is a line through the origin.
7. All possible output (y) values that a function can produce.
10. value: The nonnegative magnitude of a number, shown as |x|, representing distance from zero.
12. A rule that assigns exactly one output value to each input value.
14. When two shapes have the same angles and proportional side lengths, making them the same shape at different sizes.
17. area: The total area covered by all the faces of a solid object.
18. notation: A compact form for numbers using a decimal between 1 and 10 multiplied by a power of 10 (a × 10^n).