Question

Which numbers are a distance of 0.9 units from −2 on this number line? A number line with increments of .5 with a range of negative 4 to 2 Select each correct answer. −3.5 −3.1 −2.9 −1.1 −0.5 1.1

Answer 1

−2.9 and −1.1

Explanation:

Let x be an unknown number.

It is given that an unknown number is at a distance of 0.9 units from −2.

It means either the number is 0.9 more than -2 or the number is 0.9 less than -2.

Case 1: x is 0.9 more than -2.

`x=-2+0.9=-1.1`

Case 2: x is 0.9 less than -2.

`x=-2-0.9=-2.9`

The value of unknown number is either -1.1 or -2.9.

Therefore, the correct options are 3 and 4.