Collinear points are two or more points that lie on the same blank?

line
plane
angle
space

Solve: 3x+y=6 4x-2y=18 show all work !

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?