Which equation represents a horizontal line?

a. X=y+2

b. y=2

c. y=x+1

d. x=2

option D

x=2.................................................................................

horizontal line will be parallel to x axis and vertical line will be parallel to y axis

the slope of x axis is 0

so parallel lines will have same slope thus horizontal line has slope =0

x=2 is parallel to x axis with slope = 0

so answer is d , x= 2

hope you understood...please message if you have any doubts ...thank you

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