Question

Mrs. Flores asked her students to write a number, its opposite, and its absolute value, in that order. Four of her students turned in their work below.

Student Work

Keenan -1285, -1285, 1285

Sarah 1416, -1416, 1416 Ahab -1383, 1383, -1383

Ji-yoon 1574. -1574, -1574

Which student correctly listed a number, its opposite, and its absolute value in the correct order?​

Answer 1

Sarah is correct

Explanation:

Required

Which of the students is correct

Let a number be x,

Given what the teacher asked the students to do, the solution is:

`Number = x`

`Opposite = -x`

`Absolute = |x|`

Only Sarah got this correctly; others are incorrect.

The proof is as follows.

For Sarah

`Number = 1416`

`Opposite = -1416`

`Absolute =|1416| = 1416`

So, the numbers will be: 1416, -1416 and 1416

Other students are incorrect