Coordinate Geometry

4. a comparison of two quantities with different units
5. formed by the intersection of two coordinate axes that are perpendicular to each other
7. what two lines are if the gradient of one is the negative reciprocal of the other
10. the variable represented by "y"
12. something that can be changed; a symbol
15. a mathematical statement that two expressions are equal
16. what occurs between two variables
17. the point at which the line cuts the y-axis

1. an ordered pair of numbers
2. a branch of mathematics concerned with the properties and relations of points and lines
3. the variable represented by "x"
6. the point at which the line cuts the x-axis
8. the inverse/opposite of a number, involves swapping the fraction around
9. what two lines are if the gradients are the same
11. something that points can be plotted on
13. how steep a line is, represented by "m"
14. something you can fill out to help you draw a graph