How to Identify Graphs of Basic Functions
Each basic (parent) function has a recognizable shape: a linear function is a straight line, a quadratic is a U-shaped parabola, an absolute value function is a V, a square root function is a half-curve starting at its endpoint, a cubic is an S-shaped curve, an exponential rises or falls steeply on one side, and […]
How to Tell If a Graph Is a Function: Vertical Line Test
Use the vertical line test to tell if a graph is a function. See worked examples, open and filled points, common traps and quick checks with explanations.
