Question

what is the distance between the graphs of the quations x=3 and x=7

Answer 1

Since, both the points are on the X-axis and no Y-Coordinate is given...
The distance is a straight line Coincident on the X-Axis itself..(i.e y=0)

So The Distance is basically the Arithmetic difference of the smaller coordinate from the bigger coordinate itself...
i.e,

Here, Distance =7-3=4 units...

So,"4units" is your required Distance.

Hope it helps...
Regards,
Leukonov.