All quadratic functions have the same ... x-coordinates of the points where the graph crosses the x-axis. Draw the graph of \(y = x^2 -x - 4 \) and use it to find the roots of the equation to ...

Save guides, add subjects and pick up where you left off with your BBC account. Simultaneous equations are often two linear equations that can be plotted on a set of axes. Each linear equation can ...

The calculator offers 14-digit accuracy and 10 graphing functions, plus you can save ... one of the best models for higher-level math. Students can use it on college entry SAT, ACT, and AP exams.

In the applet below is intended to help you understand the connection between the graph of a function and the function itself. Recall that a function can be thought of as a machine which takes an ...

We've all been there: staring at a math test with ... that pseudorandom graphs could advance the current knowledge on these old problems. In 1937, Erdös discovered that using random graphs ...

I help people communicate data clearly with graphs. This article is more than 10 years old. This week I invited a guest blogger, Beth Lisberg Najberg, to share thoughts on using graphs in ...