Question

Evaluate the dot product of (2,4) (-1,2)

Answer 1

6

Explanation:

Given (x1, y1) and (x2, y2) dot product = (x1*x2 + y1*y2)

SO... given (2, 4) and (-1, 2) dot product = (2*-1 + 4*2)

= -2 + 8

= 6

Answer 2

-6

Explanation:

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