give an ideal answer to he question when asked for 1,2,3 marks respectively

Asked by pcoolboy | 2nd Aug, 2009, 12:24: PM

Expert Answer:

for 1  mark

you can write any 3 pairs of (x,y ) which satisfy the equation as the answer.

for 2 marks

you can add one step

x=(19-y)/3

and then give values to y and find coresponding value of x.

for 3 marks

it may be required to draw the line and show 3 points on it as solutions. but this will be asked in the question.otherwise no need to do that.

Answered by  | 2nd Aug, 2009, 03:04: PM

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