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 ...

A scatterplot chart graphs two related data values as a single dot by plotting one value on the horizontal X axis and the other value on the vertical Y axis. For example, you could plot an employee's ...

The y-intercept is the point at which a linear equation crosses the y-axis on the x=0 plot point. The equation to determine both the slope and the y-intercept of a line is y=mx+b. This calculation may ...