McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
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Exercise 39 Page 219

Since we have a strict inequality, the parabola will be a dashed line.

Practice makes perfect

To graph the quadratic inequality, we will follow three steps.

  1. Graph the related quadratic function.
  2. Test a point not on the parabola.
  3. Shade accordingly. If the point satisfies the inequality, we shade the region that contains the point. If not, we shade the opposite region.

Step 1

Let's draw the graph of the related function, which is y=- x^2+5x-6.

Step 2

Next, let's determine which region to shade by testing a point. For simplicity, we will use (0,0) as our test point. Let's see if it satisfies the given inequality.

y < - x^2+5x-6
0? < - ( 0)^2+5( 0)-6
0? < 0+5(0)-6
0? < 0+0-6
0 < - 6 *

Step 3

Since (0,0) did not produce a true statement, we will shade the region that does not contain the point. Also, note that the inequality is not strict. Also, note that we have a strict inequality. Therefore, the parabola will be dashed.