To work out the equation of a line from a graph, find the gradient and the \(y\)-intercept ... equation of the line is \(y = -2x + 1\). For example, using (0, −2) and (6, 0), as we move along ...

Any equation that can be rearranged into the form \(y = mx + c\), will have a straight line graph. \(m\) is the gradient, or steepness of the graph, and \(c\) is the \(y\)-intercept, or where the ...