Last week, I worked on the graphs of functions, a new task in my maths book. Learning about how to sketch the graphs was time well spent. I learnt that the shape of Y=kX^n is different, depending on k ...

To help draw a straight line graph from its equation, fill in a table of 𝑥 and 𝑦 values. Plot the pairs of values as coordinates and join to make a line. Make sure you are confident with ...

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...