Build, test, and analyze mathematical functions interactively
A function is a special relationship where each input (x-value) has exactly one output (y-value). The vertical line test helps us check this!
If any vertical line crosses a graph more than once, it's not a function.
Domain: All possible x-values
Range: All possible y-values
• Increasing: Going up ↗
• Decreasing: Going down ↘
• Constant: Staying flat →
• Concave Up: Holds water ∪
• Concave Down: Sheds water ∩
| Type | Domain | Y-Values | Curve | Del |
|---|