Question

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

Answer 1

(x,y) = (3.5, 11)

Explanation:

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

Dot product, so:

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

Then

`8x = 28`

`x = (28)/(8) = 3.5`

And

`2y = 22`

`y = (22)/(2) = 11`

So

(x,y) = (3.5, 11)