Atomic structure refers to the building of compounds true or false

true, because it's the atomic structure,on that basis we decide the valency of any atom,and based on that only atoms come together to form a compound.

True, the person before me explained it pretty well

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.