Question

A line segment is drawn from (1, 9) to (4, 9) on a coordinate grid. Which answer explains one way that the length of this line segment can be determined? A. Add 9 + 4. B. Add 4 + 1. C. Subtract 9 – 4. D. Subtract 4 – 1.

Answer 1

One way that the length of this line segment can be determined is by
D. Subtract 4 - 1

Or the distance formula can be used
d = √( (9 - 9)² + (4 - 1)² )
d = √( 0² + 3² )
d = √3²
d = 3