Question

Renee writes a number that is the same distance from 0 as 7 on a number line but in the other direction. What number did Renee write?

Answer 1

ANSWER

-7

EXPLANATION

The only numbers that have a distance of 7 from zero on the real number line are -7 and 7.

-7 is to the left of zero while 7 is to the right of zero.

But this two numbers are all 7 units from zero.

In other words, the absolute values of this numbers is 7.

$|x| = 7$

$x = - 7 \: or \: 7$

Hence the number Renee wrote is -7