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The straight line joining the points (1, -2a),(a, 1) has a gradient of 5, find the value of a

m=y-y 1 /x-x 1 5=1-(-2a)/a-15=1+2a/a-15(a-1)=1+2a5a-5=1+2a3a=6a=2
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Answered by Theo B. • Maths tutor
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Metals can be extracted fromt their oxides via the process of electrolysis. Positive metal ions are attracted to the negative electrode. explains what happens at the negative electrode. (2 marks)

Metal ions gain electrons to form metal atoms.(Eg Al3+ + 3e- ----> Al)
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Answered by Tamsin D. • Chemistry tutor
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Was machst du in deiner Freizeit?

Also, wenn ich Zeit habe, spiele ich Fußball mit meinem Bruder und lese ich viele Bücher. Manchmal fahre ich auch mit dem Rad und besuche ich meine Freunde- wir gehen auch oft in die Stadt, damit wir zusamme...
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Answered by Ronan F. • German tutor
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How to find the turning point on a curve?

The equation of the curve will be a quadratic i.e. it follows the form y=ax 2 +bx+cTo find the turning point, the quadratic will need to be solved using the completing the square method. This means to factor...
MV
Answered by Muhammad V. • Maths tutor
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Prove that the difference between the squares of any two consecutive integers is equal to the sum of these two integers.

A problem of this nature seems complex at first until you break it down and see what it is really asking you to find. We can represent two consecutive integers as x and x + 1. The problem asks us to prove so...
Answered by • Maths tutor
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