Is my explanation right (it’s in the bottom)? explain if it’s wrong?

Your explanation needs to be reconsidered.

Step-by-step explanation:

A point is in the solution set only if it satisfies both (or all) inequalities. The point (1, 2) is on the dashed line, so does not satisfy the inequality 4x-y<2. The point (1, 2) is not in the solution set.

Buzz has 4 friends and Brock has 6.

The reason being is that Buzz has to have two less friend than Brock has, and yet still both have to add up to ten.