In Exercises 23–32, use the dot product to determine whether v and w are orthogonal. 23. v = i + j, w = i - j 24. v = i+ j, w = -i + j 25. v = 2i + 8j, w = 4i - j 26. v = 8i – 4j, w = -6i - 12j 27. v = 2i - 2j. w = -i +j 28. v = 5i - 5j. w = i -j 29. v = 3i, w = -4i 31. v = 3i, w = -4j 30. v = 5i, w = -6i 32. v = 5i, w = -6j

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A: Dot Product: The vector is u=(u1,u2)v=(v1,v2)u=u1i+u2jv=v1i+v2j