Question 948873
{{{drawing(300,300,-2,14,-2,14,grid(1),
circle(3,1,0.2),
circle(6,3,0.2),
circle(9,5,0.2),
circle(12,7,0.2))}}}
Find the slope,
{{{m=(7-1)/(12-3)=6/9=2/3}}}
So then using any point, find the equation of the line.
{{{y-1=(2/3)(x-3)}}}
{{{y-1=(2/3)x-2}}}
{{{y=(2/3)x-1}}}
So when {{{y=0}}}
{{{0=(2/3)x-1}}}
{{{(2/3)x=1}}}
{{{x=3/2}}}
({{{3/2}}},{{{0}}})
{{{drawing(300,300,-2,14,-2,14,grid(1),
circle(3,1,0.2),
circle(6,3,0.2),
circle(9,5,0.2),
circle(3/2,0,0.3),
circle(12,7,0.2),graph(300,300,-2,14,-2,14,(2/3)x-1))}}}