Graphs 6
1 mark · EasyWrite down the algebraic form of a simple cubic equation.
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y = ax^3 + bx^2 + cx + d
Must show: General cubic form with coefficients
Also accept: y = ax^3 + bx^2 + cx + d
Common mistakes: Omitting bx^2 or cx; Only writing x^3
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Marking points
B1 · 1 mark · Writes the correct general algebraic form of a cubic equation.
Worked solution
The general algebraic form is where a, b, c, d are constants.