# How do you find slope given 3y-9=0?

Jun 10, 2016

Slope: $0$

#### Explanation:

$3 y - 9 = 0$ (equivalent to $y = 3$) is the equation of a horizontal line.

Slope is defined as $\left(\text{change in "y)/("corresponding change in } x\right)$

but no matter what change we make to $x$ the value of $y$ states equal to $3$;
so the change in $y$ is always $0$