Find the distance between -3 and 6 on a number line

When are two distinct non vertical lines parallel

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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?