FInd the x and y interceptsfor the equation 4x-3y=9

Question

anonymous · Answer

x-intercept is 9/4
y-intercept is -3

amistre64 · Answer

still  a fun, but trivial method is to divide it all by the constant, that 9 in this case.

4x - 3y = 9  ; /9

4x      -3y      9  
--- + --- = ---  ; and simplify
9          9       9


4x      -y        
--- + --- = 1  ; if we got a number up top, put it under
9          3     

  x        -y        
---- + --- = 1  ; if we got a "-" stick it under too
9/4        3     


  x          y        
---- + --- = 1  ; now we can just read the intercepts by 
9/4       -3               the bottom numbers