The coordinate plane
Warm-upHumanIn which quadrant is the point ?
In which quadrant is the point ?
Reflect the point in the -axis. Where does it land?
What is the distance between and ?
A cyclist in a city of square blocks rides from to along the streets, never doubling back. How many blocks does she ride?
A point is reflected in the -axis and then the result is reflected in the -axis. It ends up at . Where was ?
Kofi was asked to plot . He started at the origin, went up 3 and then right 2. Which point did he actually plot?
Which point is exactly halfway between and ?
Which statements are true for every point ? (Choose all that apply.)
In the Lean file, reflectX P is the reflection of the point P in the -axis. Which statement says that reflecting twice in the -axis brings every point back?
Write a function quadrant(x, y) that returns 1, 2, 3 or 4 for a point in quadrant I, II, III or IV, and 0 for a point on an axis. It should work for fractions too.