Answer:
D. 7
Step-by-step explanation:
distance from (x_1, y_1) to (x_2, y_2) =
²√ (x_2 – x_1)² + (y_2 – y_1)².
Since y_1 and y_2 are the same, the segment length is simply the difference between x_2 and x_1.
thus the length of a segment with endpoints at (-3, 4) and (4, 4) is 4 - (-3) = 4 + 3 = 7.