Question

Find the dot product of (-3, 5) and (4, 6).

Answer 1

Recall that:

$(a,b)\cdot(c,d)=ac+bd.$

Therefore:

$(-3,5)\cdot(4,6)=-3(4)+5(6).$

Simplifying the above result, you get:

$-12+30=18.$

Answer:

$18.$