## Precalculus (6th Edition) Blitzer

Let us consider the inequality $y\ge 3$ and substitute the equals symbol in place of the inequality and rewrite the equation as given below: $y=3$ The y-intercept is 3. Then, take the origin $\left( 0,0 \right)$ as a test point and check the region in the graph to shade: \begin{align} & y\ge 3 \\ & 0\ge 3 \end{align} So, the above expression is incorrect, which means the shaded region will not contain the test point; that is, the region away from the origin will be shaded. And the line passes through the point $\left( 0,3 \right)$. Plot the graph using the intercepts as given below: Thus, the graph of the provided inequality is plotted and the line passes through the point $\left( 0,3 \right)$. Also, we see that the shaded region does not contain the origin.