This YouTube shows how to plot the graph of a linear equation (= straight line).

Have a go at plotting the line before watching the video

1. (a) Plot the graph y = 2x + 1

(b) Use your graph to find y when x = 2.5

(c) From the graph find the value of x when y = 4.

Mindmaps/ concept maps of AQA GCSE Chemistry

5 months ago

## 2 comments:

Steve, this is a really good site!

do you think you could write something about finding the gradient of a non linear graphs??

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