In a stack of cards, each card has a number and letter on opposite sides. You are told that all cards that have a number that is even and divisible by 5 on one side have an X or a Y on the other. a) Describe or draw a card that would be a counterexample to this rule. b) If a card had a Y on one side, could it be a possible counterexample to the rule? If so, describe a possibility for the other side. If not, explain why not.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.