Identify non-linear equations and use substitution method to solve the equations.
Any equation not in the form of ay + bx = c is considered non-linear equation.
When solving 2 simultaneous equations, the solutions are actually the intersection points ( x and y coordinates) of the 2 intersecting curves (or straight lines) represented by the simultaneous equations.
Stop and Think
3x +4y = 2
x^2 + 8xy +12 = 0
Ans: x = -6/5, y = 7/5 or x = 2, y = -1
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