1] Table: x: -2, 2, -1, 1; y: -1, 1, -2, 2. Graph: Points at (-2,-1), (2,1), (-1,-2), (1,2). Mapping Diagram: Left oval: -2, 2, -1, 1; Right oval: -1, 1, -2, 2; Arrows: -2→-1, 2→1, -1→-2, 1→2. Function? Yes.
2] Set of ordered pairs: {(1,-2), (-3,-1), (1,0), (2,2), (0,3)}. Graph: Points at (1,-2), (-3,-1), (1,0), (2,2), (0,3). Mapping Diagram: Left oval: 1, -3, 2, 0; Right oval: -2, -1, 0, 2, 3; Arrows: 1→-2, 1→0, -3→-1, 2→2, 0→3. Function? No.
3] Set of ordered pairs: {(-2,1), (-1,1), (0,-1), (2,-2)}. Table: x: -2, -1, 0, 2; y: 1, 1, -1, -2. Mapping Diagram: Left oval: -2, -1, 0, 2; Right oval: 1, -1, -2; Arrows: -2→1, -1→1, 0→-1, 2→-2. Function? Yes.
4] Set of ordered pairs: {(-1,-2), (1,-1), (1,0), (2,2), (3,2)}. Table: x: -1, 1, 2, 3; y: -2, -1, 0, 2, 2. Graph: Points at (-1,-2), (1,-1), (1,0), (2,2), (3,2). Function? No.
5] Domain: [-2, 2). Range: [-2, 1]. Function? Yes.
6] Domain: [-2, 2]. Range: [-2, 2]. Function? No.
7] Domain: (-2, 2). Range: [-3, 1]. Function? Yes.
Parent Tip: Review the logic above to help your child master the concept of examples of relations and functions worksheet.
