An object is 1.0 cm tall and its inverted image is 4.0 cm tall. What is the exact magnification?

An object is 1.0 cm tall and its inverted image is 4.0 cm tall. What is the exact magnification? I figured I would post this to help others out. The correct answer is -4.0 . since the image is inverted, the magnification is negative. M= hi/ho

Answer:

magnification is = - 4/1 = - 4