Learn how to use inverse operations to find the value of an unknown variable in an equation, so that the value is true.

A linear equation is drawn as a straight line on a set of axes. To draw the graph we need coordinates. We generate these coordinates by substituting values into the linear equation.

How to Calculate Y-Intercept in Excel. 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 ...