Mathematics
Grade9
Easy

Question

Which number is a counterexample to the following statement?
For all numbers a, 2a + 7 ≤17

  1. a = 6
  2. a = 0
  3. a = 5
  4. a = 1

hintHint:

Given inequality is
2a + 7 ≤17
Subtract 7 on both sides
2a+7- 7 ≤ 17 - 7
2a ≤ 10
a ≤ 5
So from the gven options we have 6 which is not lessthan or equal to 5

The correct answer is: a = 6


    In the given question we were given with a inequality and aske to find the counter example for a

    So we solved the inequality and then obtained the domain of a based on that we eliminated the options and the n obtained the counter example.

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