Question

5. It is known that the product of 4.5 and y is not less than 9.

(a) Formulate an inequality to represent the above relation.
(b) Write down three integers that satisfy the inequality in (a).
Solution

Answer 1

(a)

`4.5y \geqslant 9`

(b) 3, 4, 5

Explanation:

(a) 4.5 × y = 9 and above

`4.5y \geqslant 9`

(b)

`4.5y \geqslant 9 \\ y \geqslant (9)/(4.5) \\ y \geqslant 2`

Possible y values = 2 and over

eg. 3, 4, 5

hope this helps :))