$y=-\frac{2}{3}$ is an equation, which represents a horisontal line with a slope of zero parallel to the x-axis.
We have the garph $\{y-0.001x+\frac{2}{3}=0\}$$[-10,10,-5,5]$

Jeremy Merritt

Beginner2021-12-29Added 31 answers

It does not matter what x takes, y has a constant value.
It is a horizontal line having a constant value which is $-\frac{2}{3}$