To write y = 6 in slope-intercept form, we need to rearrange the equation so that it has the form y = mx + b. We can see that y is already isolated on one side of the equation, and there is no x-term, which means the slope "m" is 0. The y-intercept "b" is the constant term, which is 6 in this case. So, we can write:
y = 0x + 6
or simply:
y = 6
Therefore, the slope-intercept form of y = 6 is y = 0x + 6, where the slope is 0 and the y-intercept is 6.