Start learning →

If 4x + i(3x - y) = 3 + i(-6), then x and y are:

Ax = -6, y = 3
Bx = 3, y = 6
Cx = 4/3, y = -6
Dx = 3/4, y = 33/4
Answer & Solution
Correct answer: D. x = 3/4, y = 33/4
Equate real parts: 4x = 3 → x = 3/4. Equate imaginary parts: 3x - y = -6 We have → 9/4 - y = -6 → y. That is → 9/4 - y = 9/4 + 6. So → 9/4 - y = 33/4.
Practise this question with Quill — AP Calculus AB →

Keep practising Unit 3B: Implicit Differentiation and Inverse Functions

Browse all Unit 3B: Implicit Differentiation and Inverse Functions questions for AP Calculus AB, or explore more Mathematics topics.

Start a Unit 3B: Implicit Differentiation and Inverse Functions lesson →