Mathematics for IGCSE & O level - Graphs Of Functions (Section 5 - No. 9)
In a cubic equation of the form y = ax^3 + bx^2 + cx + d, what influences the general 'shape' of the curve?
The constant d
The coefficient 'a'
The y-intercept
The x-intercepts
Explanation
The coefficient 'a' determines whether the curve goes up then down or vice-versa.
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