WRITTEN IN JAVA.

Notes:

Assume that the classes listed in the Quick Reference found in the Appendix have been imported where

appropriate.

Unless otherwise noted in the question, assume that parameters in method calls are not null and that

methods are called only when their preconditions are satisfied.

In writing solutions for each question, you may use any of the accessible methods that are listed in

classes defined in that question. Writing significant amounts of code that can be replaced by a call to one

of these methods may not receive full credit.

An APLine is a line defined by the equation $ax+by+c=0,$ where a is not equal to zero, $b$ is not equal to zero,

and $a,b,$ and $c$ are all integers. The slope of an APLine is defined to be the double value $-a\frac{b}{?}.$ A point

$($represented by integers $x$ and $y)$ is on an APLine if the equation of the APLine is satisfied when those $x$ and $y$

values are substituted into the equation. That is$,$ a point represented by $x$ and $y$ is on the line if $ax+by+c$ is equal

to $0.$ Examples of two APLine equations are shown in the following table.

Assume that the following code segment appears in a class other than APLine. The code segment shows an

example of using the APLine class to represent the two equations shown in the table.

APLine line$1=$ new APLine $(5,4,-17)$;

double slopel $=$ linel.getslope $()$; $//$ slopel is assigned $-1\mathrm{.}25$

boolean onLine$1=1$ine$1.$isonLine $(5,-2)$; $//$ true because $5(5)+4(-2)+(-17)=0$

APLine line$2-$ new APLine $(-25,40,30)$;

double slope$2-1$ine$2.$getSlope $()$; $//$ slope$2$ is assigned $0\mathrm{.}625$

boolean onLine$2=1$ ine $2.$ isonLine $(5,-2)\frac{\text{;}}{\frac{?}{?}}$ false because $-25(5)+40(-2)+300$

Write the APLine class. Your implementation must include a constructor that has three integer parameters that

represent $a,b,$ and c$,$ in that order. You may assume that the values of the parameters representing a and b are not

zero. It must also include a method getSlope that calculates and returns the slope of the line, and a method

isOnLine that returns true if the point represented by its two parameters $(x$ and $y,$ in that order$)$ is on the APLine

and returns false otherwise. Your class must produce the indicated results when invoked by the code segment

given above. You may ignore any issues related to integer overflow.