Question 1159749
Graph {{{y = 3x}}}

to graph it you need two points

{{{x}}}|{{{y}}}

{{{0}}}|{{{0}}}....if {{{x=0}}}->{{{y = 3*0=0}}}

{{{1}}}|{{{3}}}....if {{{x=1}}}->{{{y = 3*1=3}}}

plot points and draw a line through


{{{drawing( 600, 600, -10, 10, -10, 10,
blue(circle(0,0,.15)), blue(circle(1,3,.13)), 
 graph( 600, 600, -10, 10, -10, 10, 3x)) }}}