Question

Given that a= 3i – 2j and b= -4i + 10j, find b – a.

-7i + 12j
-i + 8j
-i + 12j
-7i + 8j

Answer 1

When a = 3i - 2j, and b = -4i + 10j. Plug in the corresponding terms with the corresponding variables.

(-4i + 10j) - (3i - 2j)

Distribute the negative to each variable in the second parenthesis

- (3i - 2j) = -3i + 2j

Simplify.

-4i + 10j -3i + 2j

-7i + 12j

-7i + 12j, or (A) is your answer

hope this helps