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A (0,2) and B (6,5) are points on the straight line ABCD. AB=BC=CD. Work out the co-ordinates of D.

D= (18,11)
AC
Answered by Arianna C. • Maths tutor
3911 Views

Point A has coordinates (-1,3). Point B has coordinates (2,-3). Find the equation of the line L that goes through these two points. Point C has coordinates (0,1). Hence or otherwise, find the equation of the line perpendicular to L that goes through C.

First we use the equation gradient = (y1-y2)/(x1-x2) to find the gradient of the line L, using point A (-1,3) and point B (2,-3). This gives us gradient = (3-(-3)/(-1-2) = (3+3)/(-3) = -2. Now we substitute ...
AG
Answered by Asa G. • Maths tutor
3725 Views

How can I factorise x^2 - 7x + 12?

So firstly, you want to split the equation into the format of a^2 + bx + c, so you know what a, b and c equal. a = 1b = -7c = 12 Now, you need to try to split the equation into the format (x + ?)(x + ?). To ...
GD
Answered by Georgia D. • Maths tutor
4602 Views

Why doesn't (a+b)^2 = a^2+b^2

(a+b) 2 actually means (a+b)x(a+b) and so you have to solve this the long way unfortunately. You can use the grid method to do this [I would write this out on the whiteboard function at this point] which giv...
MT
Answered by Mai T. • Maths tutor
3159 Views

Do particles expand when heated?

When an object is solid, the particles have little energy and are closely packed together. When you heat an object, the particles gain energy and begin to move more frequently and randomly. This means that t...
MT
Answered by Mai T. • Maths tutor
4627 Views