Question 386639
Generate ({{{x}}},{{{y}}}) data pairs.
Graph them.
Join them with straight lines.
When {{{x=10}}}, {{{y=0 +- 7}}}
When {{{x=-4}}}, {{{y=0}}}
 
{{{drawing(300,300,-10,10,-10,10,
grid(1),
circle(10,7,0.3),
circle(10,-7,0.3),
circle(-4,0,0.3),
blue(line(10,7,-4,0)),
blue(line(10,-7,-4,0)),
graph(300,300,-10,10,-10,10,0))}}}