Question

Explain why the equation of a horizontal line is y = b.

Answer 1

because b stands for y intercept

Answer 2

take any 2 points on any line that says `y=number` and plug them into a slope formula.

Do not get fooled by my purple title though, I am not a pro at all :)

Answer 3

Have fun !

Answer 4

because any point on a horizontal line looks like \((x, b)\) where\(x\) can be anything but \(y\) has to be \(b\)
so the line is called "\(y\) is \(b\)" i.e. \(y=b\)