Which of the following Lines has a slope of -1/2

1. x-2y=0
2. -x+2y=0
3. x+2y=0

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.