If you know two points on a line, why can you write two different equations for that line?

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.