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than you know that the coordinats of a point p you write in form of p=(x,y) - so you see that for point v these coordnates are x= ? and y= ? than how you think what is true ?
@graciecohen what is the dot product of those two vectors?
I have no idea of the answers and this is all they gave me
are you familiar with what a dot product is?
the dot product is -34 I think
yes thats correct
so assuming v*w means the dot product of v and w then you know that choice c is correct
looking at what @jhonyy9 wrote , can you tell if A is true or false?
yep, so you know a and c are both true, lets look at b
if two vectors are perpendicular what does their dot product equal?
google it if you arent sure
orthogonal is perpendicular by the way
@graciecohen what do you think?
so its not perpendicular
so we have a = true, b = false, c = true, what about d?
what is -2w equal to?
d is true
a = true b = false c = true d = true
thank you so much