A quartic function is given as *f*(*x*) = *ax*^{4} + *bx*³ + *cx*² + *dx* + *e* where *a*, *b*, *c*, *d* and *e* are coefficients. *a* controls whether the graph ends upwards or downwards, while *e* tells us the *y*-intercept.

Slide the values of

*a*,

*b*,

*c*,

*d*and

*e*to observe the changes of the graph

*f*(

*x*) =

*ax*

^{4}+

*bx*³ +

*cx*² +

*dx*+

*e*.

Betty, Created with GeoGebra

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