You can put this solution on YOUR website! YOU GAVE ME THE X TERM & I INSERTED THE Y TERM BECAUSE THATS THE TERM YOU NEED TO USE THE GRAPHING PROGRAM.
THUS I USED THE Y=mX+b LINE FORMULA TO TAKE ADVANTAGE OF THE GRAPHING PROGRAM WHICH FOLLOWS WHERE m=SLOPE & b=THE Y INTERCEPT.
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F(X)=-X-2
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Y=-X-2 IS THE STANDARD LINE FORMULA.
-------------------------------------------------- (graph 300x200 pixels, x from -6 to 5, y from -6 to 5, y = -x -2 ).