Decide 2

Decide whether points A[-2, -5], B[4, 3], and C[16, -1] lie on the same line

Correct answer:

x =  0

Step-by-step explanation:

u = (4(2), 3(5)) = (6, 8) v = (16(2), 1 (5)) = (18, 4)  s = u v = uv cos α  cos α = c  c=62+82 182+426 18+8 40.7593  c = 0  x=0



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Showing 1 comment:
Ziacka
don't lie on same line





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