The vertices of triangle shaded region are .

Therefore shaded region have three solid boundary lines and let be these lines are \ \ .

The two points on the solid line are .

To find the slope of solid line , substitute the values of in the slope formula .

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To find the y - intercept of solid line , substitute the values of in the slope - intercept form or .

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Therefore solid line equation is . Because the shaded region is below the solid line , the inequality is .

The two points on the solid line are and the solid line intersect the y - axis at , so the y - intercept of the second solid line is .

To find the slope of solid line , substitute the values of in the slope formula .

.

To find the equation of solid line , substitute the values of in the slope - intercept form or .

Therefore solid line equation is . Because the shaded region is above the solid line , the inequality is .

The two points on the solid line are and the solid line intersect the y - axis at , so the y - intercept of the second solid line is .

To find the slope of solid line , substitute the values of in the slope formula .

.

To find the equation of solid line , substitute the values of in the slope - intercept form or .

Therefore solid line equation is . Because the shaded region is above the solid line , the inequality is .

The system of inequalities are .