BBC

Determine the equation of a quadratic function from its graph

In this part you do not have to sketch the graph and you may even be given the sketch of the graph to start with. For a quadratic equation of the form \(y = k{(x - a)^2} + b\), the following diagram ...
BBC

How to work out the gradient of a straight line graph

In order to work with gradients and straight lines successfully, a good understanding of coordinates and linear graphs is needed. The gradient of a line is calculated by dividing the difference in the ...
TechRepublic

How to find the latest (or earliest) date and a corresponding value

How to find the latest (or earliest) date and a corresponding value Your email has been sent You probably know how to use the MAX() and MIN() functions, to return the latest and earliest dates, ...
TechRepublic

How to use VLOOKUP() to find the closest match in Excel

How to use VLOOKUP() to find the closest match in Excel Your email has been sent Image: Wachiwit/Shutterstock Must-read Windows coverage CrowdStrike Outage Disrupts Microsoft Systems Worldwide 10 Best ...