Subjects algebra

Inequalities Unshaded Region Adc472

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Inequalities Unshaded Region Adc472


1. The problem asks to write down the two inequalities that describe the unshaded region on the graph. 2. First, find the equations of the two lines. - For the solid line passing through points (-2,0) and (4,7): The slope is $m=\frac{7-0}{4-(-2)}=\frac{7}{6}$. Using point-slope form with point (-2,0): $$y-0=\frac{7}{6}(x+2) \implies y=\frac{7}{6}x+\frac{7}{3}$$ - For the dotted line passing through points (0,5) and (5,0): The slope is $m=\frac{0-5}{5-0}=-1$. Using point-slope form with point (0,5): $$y-5=-1(x-0) \implies y=-x+5$$ 3. The shaded region is below the solid line and above the dotted line. - "Below the solid line" means: $$y \leq \frac{7}{6}x + \frac{7}{3}$$ - "Above the dotted line" means: $$y \geq -x + 5$$ 4. The unshaded region is the complement of the shaded region, so it is either above the solid line or below the dotted line. - Above the solid line: $$y > \frac{7}{6}x + \frac{7}{3}$$ - Below the dotted line: $$y < -x + 5$$ 5. Therefore, the two inequalities describing the unshaded region are: $$y > \frac{7}{6}x + \frac{7}{3}$$ and $$y < -x + 5$$