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Given a circle with the equation y^2 + x^2 = 10, with a tangent that intersects at point P, where x=1, find the coordinates for the point at which the tangent meets the x axis (Q).

As the tangent meets the circle at P, when x =1, we can assume that the y value will be the same for this value of x. therefore we substitute x=1 into the equation of the cirlce. Rearranging the equation of ...
JP
Answered by Joseph P. • Maths tutor
5845 Views

How do I demonstrate the importance of something to a text?

Very often in an exam question you will be asked of discuss how important something is within a text, this could be a character or symbol, for example. (Sometimes characters can be symbols themselves). If as...
JF
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f(x) = 5x − 12. (i) Calculate f(4). (ii) Find f( x + 1). Give your answer in the form ax + b .

i) (5 x 4) -12 = 8 ii) 5(x + 1) - 12 5x + 5 -12 5x - 7
SM
Answered by Santiago M. • Maths tutor
5388 Views

What is the wavelength of a wave?

First I would draw a graph showing a wave to support my explanation for what the wavelength means. The wavelength of a wave is the distance, in metres, from one point of the wave to the same point on the nex...
KW
Answered by Kimberley W. • Physics tutor
3346 Views

By what process do plants move ions from the soil exterior to the plant, into the root cells of the plant?

Active Transport Normally soil ion concentrations will be low, and high in the root cells. The ions have to move up a concentration gradient and therefore requires an energy-using process to do so.
MT
Answered by Miss T. • Biology tutor
3731 Views