There are n
sweets in a box.
2 of these are jelly beans and the rest are cola bottles.
Colin takes 2 sweets out of the box at random. The probability of getting 2 jelly beans is
1
15

Work out how many sweets are in the box

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solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system