Question

what is the equation of a line with a slope of 0 and passing through the point 5,4
y=4
x=5
y=4x+5
y=5x+4

Answer 1

y=4

Answer 2

y = 0x + 4 i.e. y = 4 represents the equation of the line passing through point 5,4

if u put x = any value , 0x will always give value 0
so in all cases you will get y as 4

so you will get a line parallel to the x-axis, means 0 slope