Find the length of the segment AB if A (-7; 9), B (-4; 5).
| August 12, 2021 | education
Find the length of the segment using the appropriate formula. If points are specified by coordinates A (x1; y1), B (x2; y2), then | AB | = √ ((x2 – x1) ^ 2 + (y2 – y1) ^ 2).
If A (- 7; 9), B (- 4; 5), then the length of this segment is:
| AB | = √ ((- 4 – (- 7)) ^ 2 + (5 – 9) ^ 2) = √ ((- 4 + 7) ^ 2 + (- 4) ^ 2) = √ (3 ^ 2 + 16 ) = √ (9 + 16) = √25 = 5.
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