What is the answer to this question ?

When only separate discreet points are graphed it is called?

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

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total