Predicting Values: Once you have a linear equation that represents a relationship, you can use it to predict values. For example, if you know the cost of producing a certain number of items, you can ...

Any straight line graph has a constant gradient, which is calculated by the change in 𝑦 divided by the change in 𝑥, along any section of the graph. The gradient is measuring the steepness of the ...

1. Find the equation of the line which passes through the points (5,1) and has a slope of .5. In this case the slope and one set of coordinates are known. This case involves the use of the point-slope ...