bio question s!!!

[igcse student 5558]

how to join the graph's points ( free hand or ruler from point to point ) or smthn else 1?!

 

[phantom]

If the question says, "smooth curve" or "line of best fit" and the points are not forming a straight line, then it must be a curve, but if he says "plot the graph", then draw a point-to-point ruled lines

 

[Mr haytham]

but pay attention : do not extrapolate the graph (extend the graph outside the first and last point )