Question

A lookout tower above a canyon is 4 meters above ground level. The depth of the canyon is 16 meters below ground level. If 0 represents ground level, which number sentence correctly compares their distances above and below ground level?

Answer 1

A lookout tower above a canyon is 4 meters above ground level. The depth of the canyon is 16 meters below ground level. If 0 represents ground level, which number sentence correctly compares their distances above and below ground level?

level ground

we need to take a level as a reference , our reference level will be the ground,

up will be positive and down will be negative, as the y-axis

so, check every level

the lookout tower is 4 meters above the ground level , it is

$th\text{e lookout tower: +4}$

The depth of the canyon is 16 meters below ground level, it is

$he\text{ depth of the canyon :-16}$