Question 682443
No, because you could have two points in the first quadrant that are positive and the line could still be negative.

example:

{{{y=-3x+7}}} has negative slope {{{m=-3}}}

find two points on a line that have positive coordinates:

if {{{x=1}}} => {{{y=4}}}; the point is ({{{1}}},{{{4}}})

if {{{x=2}}} => {{{y=1}}}; the point is ({{{2}}},{{{1}}})

{{{drawing(600,600,-10,10,-10,10,grid(1),circle(1,4,0.2),circle(2,1,0.2),graph(600,600,-10,10,-10,10,-3x+7))}}}