Question 1165416
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(a)  vector equation is  (x,y) = (7-3t, t),  where 't' is the parameter, which may have any real value.


     We take 'y' as the parameter 't',  and express x via y from the equation,   
                                        replacing there 'y' with 't'.



(b)  vector equation is  (x,y) = ({{{t}}}, {{{(2t-3)/5}}}),  where 't' is the parameter, which may have any real value.  


     We take 'x' as the parameter 't',  and express y via x from the equation,   
                                        replacing there 'x' with 't'.

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Solved, with explanations.