Question

help?

Answer 1

@freckles

Answer 2

for v=<2,-2> what's the graph of 2v?

Answer 3

@amistre64

Answer 4

draw v twice as long ....

Answer 5

When you multiply a vector by a scalar, just multiply the individual components by the scalar:

\[\vec{v} = \langle x,y\rangle \Rightarrow a\vec{v} = \langle ax, ay\rangle\]

Answer 6

so it's <2,-6>? what does the graph look like?

Answer 7

@KevinOrr

Answer 8

It's not \(\langle 2, -6 \rangle\); if you want to double \(\vec{v}\), you need to double *each of its components*.

Answer 9

what do you mean?

Answer 10

@KevinOrr

Answer 11

\(2 \times \langle 2, -2 \rangle = \langle 2 \times 2, 2 \times -2 \rangle = \langle 4, -4 \rangle \)

Answer 12

the points are <2,-3> and I said <4,-6>

Answer 13

@KevinOrr