Question 946878

simplify so that the equations are in {{{y=mx+b}}} format.
if {{{m}}} and {{{b}}} are the {{{same}}}, then its {{{infinite}}} solutions.
if {{{m}}} is the {{{same}}} and {{{b}}} is {{{different}}}, then it's {{{no}}} solution
if {{{m}}} is {{{different}}}, than it's {{{one}}} solution ({{{b}}} doesn't matter if {{{m}}} is different)

so, in your case

{{{y = highlight(-3)x + 1}}}=>{{{m=-3}}} 
{{{y = highlight(3)x + 7}}}=>{{{m=3}}}

{{{m}}} is {{{different}}} than it's {{{one}}} solution