Most year 11 classes have been looking at drawing straight line graphs during the first week back! It is important that you know how to draw a straight line graph.
Drawing straight line graphs
Showing posts with label linear graphs. Show all posts
Showing posts with label linear graphs. Show all posts
Thursday, 1 September 2016
Friday, 13 May 2016
Parallel and Perpendicular Lines
Get some practise in on finding perpendicular lines!
When it comes to perpendicular gradients, the key rule is that the gradients have a product of -1.
So, this means that if you know one gradient, the perpedicular gradient comes from changing the sign and inverting it - for example, a gradient of 2 is perpendicular to -1/2.
A couple more -
A gradient of -3 is perpendicular to a gradient of 1/3
A gradient of 2/3 is perpendicular to a gradient of -3/2
Still not sure? Take a look at this tutorial from Corbett Maths.
So, this means that if you know one gradient, the perpedicular gradient comes from changing the sign and inverting it - for example, a gradient of 2 is perpendicular to -1/2.
A couple more -
A gradient of -3 is perpendicular to a gradient of 1/3
A gradient of 2/3 is perpendicular to a gradient of -3/2
Still not sure? Take a look at this tutorial from Corbett Maths.
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