Question

Find (x,y) such that (8,2)(x,y) = (28,22)

Answer 1

Answer:

(x,y) = (3.5, 11)

Step-by-step explanation:

(8,2)(x,y) = (28,22)

Dot product, so:

$(8,2)(x,y) = (8x,2y) = (28,22)$

Then

$8x = 28$

$x = \frac{28}{8} = 3.5$

And

$2y = 22$

$y = \frac{22}{2} = 11$

So

(x,y) = (3.5, 11)