Review Name: __________________________________ Unit 2: Intro to Functions & Equations 1. Which of the following are functions? Not Functions? Why? 2. For the situation given, create a table, a function rule and a graph. Make sure to scale and label your graph. Situation: Every sandwich costs $5. Function Rule: Let x = number of sandwiches Let y = amount of money spent Table: Graph 3. Two examples are shown below. Answer the questions: a) Which graph shows a proportional linear relationship? Explain how you know. b) Consider this question, provide an answer and justification for each company: If the input were to double, will the output double?