What is the difference between a parametric equation and a general equation?
A parametric equation is defined by a variable t such as y = 4t +1 and x = 2t, while general equation is defined sorely by y and x (in 2 dimensional space). As t is the free variable you can simply replace t by x and build a general equation. In this case, y = 2x +1 since t = 1/2x.
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Related Maths GCSE answers
All answers ▸expand out the bracket (2m - 3)(m + 1).
How do you use the quadratic formula?
There are n sweets in a bag, 6 of which are orange, the rest are yellow. Hannah takes a random sweet from the bag and eats it, and then does so again. The probability that Hannah eats two orange sweets is 1/3. Show that n^2-n-90=0.
For which values of x is x^2 - 5x + 6 < 0 true?