Watch this video to learn about the equation of a straight line. Since we are given 2 points that already lie on the line, using the formula as before, we need to calculate the gradient first.

The straight line through two points will have an equation in the form \(y = mx + c\). Then, we can find the value of \(c\), the \(y\)-intercept, by substituting the coordinates of one point into ...

Continuing from the previous example, that would look like this ... Mathematicians use this form specifically to define the equation of a straight line when they know the slope of the line ...

Here are some examples of when to use the formula ... which means it can potentially result in fewer errors. The straight-line depreciation equation measures how much value an item loses over ...