Quadratic Intervals

Determine the intervals where the inequality x^2 - 2x - 3 ≤ 0 holds true.

• [0, 2]

• [3, 5]

• [-2, 0]

• [-1, 3]

Interpret the solution set of the inequality x^2 - 6x + 8 > 0 in interval notation.

• (-∞, 4)

• (-∞, 2) ∪ (4, ∞)

• (2, ∞)

• (2, 4)

For the quadratic inequality x^2 - 9 ≤ 0, what are the critical points and how do they affect the solution set?

• The critical points are -4 and 4, and the solution set is [-4, 4].

• The critical points are -3 and 3, and the solution set is [-3, 3].

• The critical points are -3 and 3, and the solution set is (-3, 3).

• The critical points are -2 and 2, and the solution set is (-2, 2).

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Drag the intervals that indicate where the function is increasing.​ (a)   ​ (b)   Note: Drag the interval with the smaller values first.

Drag the intervals that indicate where the function is decreasing.​ ​ ​ ​ (a)   ​ ​ (b)  

Note: Drag the interval with the smaller values first.

• drop down

What is the decreasing interval on the function shown?