Question

motion of partical along straight line path is given by

Answer 1

motion of a particle along a straight line can be given by the x-t graph or the velocity is given by the y axis of the graph and displacement is given by the product of velocity and time

hope this will help you.
thank you.

Answer 2

It is a One dimensional Motion.

and It can be Give by a Ray above the Defined Path::{i will Try to mimic it}eg↓

→
A


Now If you meant it in Uniform motion...
Then same Representation can be used...

and In The Graph sense.

in Position-Time Graph.
it is a Strainght line Parallel to Time Axis.

On Velocity Time Graph.

it will be a Straight Diagonal Starting From Origin(0,0)

in Position-veolicty

(i think) it will be a Straight line parallel to Position Axis.