Question 54551
AN X INTERCEPT OF 3 IS DEFINED BY THE POINT(3,0) & THE Y INTERCEPT OF 5 IS DEFINED BY THE POINT(0,5).

NOW WE FIND THE SLOPE (5-0)/(0-3)=5/-3 OR THE SLOPE IS -5/3

NOW WE USE THE LINE EQUATION Y=mX+b WHERE THE m VALUE IS THE SLOPE AND THE b VALUE IS THE Y INTERCEPT POINT SO WE HAVE Y=-5/3X+5 

TO PROVE WE HAVE THE CORRECT EQUATION YOU CAN SUBSTITUTE EITHER SET OF X&Y VALUES IN THIS EQUATION AND SOLE IT. THUS

0=-5/3*3+5 OR 0=115/3-5 OR 0=-5+5 OR 0=0
5=-5/3*0+5 OR 5=0+5 OR 5=5