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Lesson details
Key learning points
- In this lesson, we will continue to investigate the relationships between inequalities and equations. We determine truth statements based upon a given inequality.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
Given that x > y, is the following inequality always, sometimes or never true? x + 2 > y + 2
Never true
Sometimes true
Q2.
Given that x > y, is the following inequality always, sometimes or never true? y > x + 5
Always true
Sometimes true
Q3.
Given that x > y, is the following inequality always, sometimes or never true? 2x > y + 4
Always true
Never true
4 Questions
Q1.
Solve the equation 2x - 11 = 21
x = 11
x = 5
x = 6
Q2.
Solve the inequality 2x - 11 ≤ 21
x = 16
x = 5
x ≤ 5
Q3.
If 2x - 11 = 21, which of the following is also true? Select one.
2x - 11 = 20
4x - 11 < 21
4x - 22 = 21
Q4.
If a + b = 10 , which of the following is also always true? Select one.
2a + b > 10
a + b > 20
a > 0