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Answer: x=(y+7)/4Workings:y=4x-7 add 7 to both sidesy+7=4x divide both sides by 4 to give the answer
You need to use Pythagoras's theorem which states that for any right angled triangle, a2+b2=c2 , where c is the hypotenuse and a and b are the other 2 sides of the triangl...
The index is 2/3 so first of all we can separate this and begin by looking at the 1/3. Fractions as indices mean that you must root the number, in this case we must cube root it because of the 3 in the de...
214 ÷ (29)2 = 214 ÷ 218 = 2-4 = 1/(24) = 1/16 (9x2=18) (14-18=-4) ...
The key points with graph sketching are to think about the shape of the curve, any turning points, and the intercepts with the y- and x- axes. This curve is linear in x, and is therefore a straight line (...
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