If it’s parallel to the y-axis, it must be an x value that is straight up and down. The x coordinate here is -2 so the line must be vertical from -2 on the x-axis.
Noelle goes east at N mph. Karina travels west at N + 9 then their velocity between them is (N + N + 9) After 8 hours they travel 8(2N + 9) = 232 (2N + 9) = 29 2N = 20 N = 10 mph for Noelle N+9=19 mph for Karina
