The graph of the inequality is the shaded region and boundary of the inequality is
. To graph the boundary, find the x-intercept and y-intercept of the line.
First find the y-intercept.
\The y-intercept is the value of y, when x = 0.
(Substitute x = 0
in original equation)
(Simplify)
(Divide each side by negative 3) \ \
(Simplify)
The y-intercept is 1, so the graph intersects the y-axis at (0,
1).
Next find the x-intercept. \ \
\The x-intercept is the value of x, when y = 0.
\ (Substitute y = 0 in original equation)
(Simplify)
The x-intercept is 3, so the graph intersects the x-axis at (3, 0).
To draw inequality follow the steps.
1. Draw a coordinate plane.
\2. Plot the points.
\3. Since inequality symbol is
, the boundary is included in the solution set. Graph the boundary of the inequality
with a dark line.
4. To determine which half-plane to be shaded use a test point in either half-plane. A simple choice is .
Substitute and y = 0 in original inequality .
The statement is true.
\4. Since the statement is true, shade the region that contains point .
\
Inequality graph is