Can someone answer this

give an example of a line with undefined slope and one with zero slope.
what is the difference if you were to plot your equations.

Zero slope line coinciding with x axis and undefined slope line coinciding with y axis

Slope=rise/run
when rise=0 or when it is a horizontal line (y=something, a line that goes straight left and right) then you get a zero slopoe

when run=0, or when it goes up and down infinitely or vertical line (x=something) you get undefined slope because rise/0 is undfined

zero slope would be y=c where c is a constant
undefined slope would be x=c where c is a constant

zero slope is a horizontal line
undefined slope is a vertical line