Browsing category graphs

Sketching graphs: the DATA method

The DATA method is probably the coolest acronym I've ever come up with - it's even about graphs! It's a four-point plan for how to sketch a graph and be pretty sure of getting the salient features right. D is for domain The first thing to decide is, where is

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Co-ordinate geometry revision quiz

This quiz is to get you up to speed with straight lines, gradients, distances and midpoints. Enjoy!

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James Bloody Grime and his blasted logarithms

It's typical of James Grime to ask a really interesting question just as I'm going to bed. I was going to sleep like a log, but suddenly I was awake liking logarithms. I've been asked, for what base a does the equation $\log_a(x) = a^x$ have only one solution. If

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Five ways to stop feeling self-conscious about drawing graphs

I teach students from a wide range of backgrounds -- from kids who do part-time jobs to earn enough for their tuition money, to kids whose parents run banks, from the shyest and most introverted teenagers, to students so brash they sign autographs. Some of them can barely count, while

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A tricky C2 question…

I was sent this by my friend and colleague TeaKay from Blogstronomy, and I've adapted the puzzle slightly to make the sums a little bit nicer. A curve has the equation $y = (x-2)^2 - n^2$. The area bounded by the co-ordinate axes and the curve in the first quadrant

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Core 1 graphs: all you need to know

Part I: Basic shapes of Core 1 graphs There are a handful of basic shapes of graphs you need to know about for C1, namely: - reciprocal graphs ($y = \frac{1}{x}$) - reciprocal-square graphs ($y = \frac{1}{x^2}$) - straight line graphs ($y = x$) - you know this one, right?

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Core 1 graphs: all you need to know

Part I: Basic shapes of Core 1 graphs There are a handful of basic shapes of graphs you need to know about for C1, namely: - reciprocal graphs ($y = frac{1}{x}$) - reciprocal-square graphs ($y = frac{1}{x^2}$) - straight line graphs ($y = x$) - you know this one, right?

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