How do you write an equation of a line given m=0 and b=4?

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Answer 1 · 2018-03-29T16:20:13

#y=4#

If the slope is 0 it means that it does not go up or down as you read left to right on the x-axis.

So it is parallel to the x-axis.
Unusually you have used #b# for the constant at the end. People normally use #c#.

#y=mx+b#

but #b=4 and m=0# giving:

#y=0(x)+4#

#y=0+4#

#y=4#