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LenaWriter [7]
3 years ago
7

Find the distance between the points (a,-2) and (3a,5)

Mathematics
1 answer:
romanna [79]3 years ago
7 0

To find the distance between two points A = (A_x, A_y),\ B = (B_x, B_y) you may use the formula

\overline{AB} = \sqrt{(A_x-B_x)^2+(A_y-B_y)^2}

In your case, the formula becomes

\overline{AB} = \sqrt{(a-3a)^2+(-2-5)^2} = \sqrt{(-2a)^2+(-7)^2} = \sqrt{4a^2+49}

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