Question 725897
They give you a hint with the answers.
All of them have {{{x=t}}} .
That (making {{{t=x}}} is a reasonable first thing to try when you have to convert a function into parametric equations (equations that express {{{x}}} and {{{y}}} as a function of some other variable(s), like {{{t}}}.
 
{{{syatem(-3x+(1/2)y=2/3, x=t)}}} --> {{{-3t+(1/2)y=2/3}}} --> {{{-6t+y=2(2/3)}}}
{{{-6t+y=2(2/3)}}} --> {{{-6t+y=4/3}}} --> {{{highlight(y=6t+4/3))}}}