Question

another fossilized bone was found outside the area of the grid. the paleontologists need to extend the grid so they can record the location of the new bone. which number line represents the x - axis when it is extended? four number lines are shown: first with -1, -2, -3, -4, -5, 0, 1, 2, 3, 4, 5; second with 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5; third with 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5; fourth with -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5. there is also a grid image with a fossil and a point outside the grid.

Explanation:

Step1: Check grid's original x-axis

The right graph shows the original x-axis with positive numbers (1-5). Extending it needs negative numbers.

Step2: Verify number line order

A valid x-axis has numbers increasing rightward. The bottom line (-5,-4,...0,1,...5) follows this.

Step3: Match extended axis needs

The bottom line includes negative values for extension, matching the requirement.

Answer:

The bottom number line (showing -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5)