Question 496839
 the linear equation in the {{{slope-intercept}}} form is {{{y=mx+-b}}} where {{{m}}} is a slope and {{{b}}} is {{{y-intercept}}}

the graph of the linear equation {{{x=3}}} will be a {{{line}}} {{{parallel}}} to {{{y-axes}}} and crosses {{{x-axes}}} at {{{3}}} because its slope {{{m=0}}} and doesn't crosses {{{y-axes}}}, or {{{b=0}}}