If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

👉 Learn how to find the rate of change from a graph. The rate of change is the rate at which y-values are changing with respect to the change in x-values. To determine the rate of change from a graph ...

👉 Learn how to find the slope between two points. The slope of a line is the steepness of the line. The horizontal line has a zero slope while the vertical line has an undefined slope. To determine ...