if point a = -7 and b = 8 what is their length?

my answer is 15

Right.

thank you

To find the length of a line segment, you would need to use the distance formula. The distance formula is derived from the Pythagorean theorem.

The formula for finding the distance between two points (x1, y1) and (x2, y2) in a two-dimensional coordinate system is:

Distance = √((x2 - x1)^2 + (y2 - y1)^2)

Here, the coordinates of point A are (-7, 0), and the coordinates of point B are (8, 0). So, the equation becomes:

Distance AB = √((8 - (-7))^2 + (0 - 0)^2)
= √((8 + 7)^2 + 0^2)
= √(15^2)
= √(225)
= 15

Therefore, the length of line segment AB is indeed 15 units.