Lesson B5
B5 Linear and quadratic inequalities Quiz: AQA Maths, Unit 2
20 questions
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Lesson B5, Linear and quadratic inequalities: 20 multiple choice questions for the AQA Maths (7357), Unit 2: Algebra and functions, written with Revision Ninja.
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The 20 questions
-
Solve x^2 - 5x + 6 < 0.
- -3 < x < -2
- x <= 2 or x >= 3
- x < 2 or x > 3
- 2 < x < 3
-
Solve x^2 - x - 6 >= 0.
- x <= 2 or x >= -3
- -2 <= x <= 3
- x >= -2 and x <= 3
- x <= -2 or x >= 3
-
Solve 3(x - 1) > 2x + 4.
- x < 7
- x > 7
- x > -7
- x > 1/5
-
Solve (x - 1)/(x + 2) >= 0.
- x <= -2 or x >= 1
- -2 < x <= 1
- x > -2 and x <= 1
- x < -2 or x >= 1
-
Which set notation describes x > 2 or x < -1?
- [-1, 2]
- (-1, 2)
- (-infinity, 2) intersection (-1, infinity)
- (-infinity, -1) union (2, infinity)
-
For a quadratic with no real roots and a positive leading coefficient, when is it positive?
- For all real x
- Only when x > 0
- For no real x
- Only between its roots
-
Find the range of k for which x^2 + kx + 4 > 0 for all real x.
- -2 < k < 2
- k < -4 or k > 4
- k > 4
- -4 < k < 4
-
Which region represents y > x + 1?
- Below the line y = x + 1, drawn dashed
- Below the line y = x + 1, drawn solid
- Above the line y = x + 1, drawn solid
- Above the line y = x + 1, drawn dashed
-
How many integers satisfy 2 < x^2 < 20?
- 3
- 8
- 4
- 6
-
A rectangle has length x + 3 and width x, and its area is less than 40. Which range of x applies?
- x < 5
- x > 5
- 0 < x < 5
- -8 < x < 5
-
Profit P = -x^2 + 10x - 16 is positive for which values of x?
- 0 < x < 10
- x < 2 or x > 8
- 2 < x < 8
- x > 8
-
Solve x/(x - 1) < 2.
- x < 1 or x > 2
- 1 < x < 2
- x < 2
- x > 2
-
For which x does y = x^2 - 2x + 3 lie above y = 2x?
- x < 1 or x > 3
- x < 3
- x > 1
- 1 < x < 3
-
Which statement about x^2 < 0 is correct?
- Only x = 0 satisfies it
- All real x satisfy it
- No real x satisfies it
- Only negative values of x satisfy it
-
Solve x^2 - 4 >= 0 and x < 3 together.
- -2 <= x <= 2
- x >= 2 only
- x <= -2 or x >= 3
- x <= -2 or 2 <= x < 3
-
Which set of values of x satisfies 2x - 1 < 5 and 3x + 2 > -4?
- -3 < x < 2
- -2 < x < 3
- x < 3 and x < -2
- x < 3 or x > -2
-
Solve 2x^2 + 3x - 2 > 0.
- x < -2 or x > 1/2
- x < 1/2 or x > 2
- x > -2 only
- -2 < x < 1/2
-
Which expression is positive for all real x?
- x^2 - 6x + 5
- x^2 + 2x + 5
- x^2 - 2x - 5
- -x^2 + 2x + 5
-
How many integer values of x satisfy x^2 - 2x - 8 < 0?
- 4
- 6
- 3
- 5
-
For (x - a)(x - b) < 0 with a < b, what is the solution set?
- a < x < b
- x > a only
- b < x < a
- x < a or x > b
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