A negative value of 𝑚 shows the line has a downward slope. A gradient of –8 is steeper than a gradient of –3. 𝑐 is the 𝑦-intercept of the line.

Watch this video to find out how the equation 𝑦 = 𝑚𝑥 + 𝑐 can be used to work out the gradient and 𝑦-intercept on a straight line graph.