Answer:
[tex]y=-3[/tex]
Step-by-step explanation:
A horizontal line has no slope. This means that the y-value remains unchanged as the x-value changes.
Since the y-intercept will be -3 since there is no change in the y-value and the slope is 0, we can plug this into the slope-intercept equation and get the overall equation of the line.
[tex]\text{Slope-intercept equation:}\\\\y = mx+b~ (\text{Where m = 0 and b = -3})\\\\\text{Plugging in:}\\\\y=(0)(x) +(-3)\\\\\boxed{y = -3}[/tex]
Therefore, the equation of the line is y = -3.
