I am studying for my final and just want some clarification on mirror facts. I k

Question

I am studying for my final and just want some clarification on mirror facts.

I know this:
Convex: focal length = negative and concave is opposite positive
Diverginging = - image dist converging just the opposite or positive
if an image is on the same side then the image distance is negative. If it is on the opposite side then positive
spherical has a negative focal length
if an image dist is neg then the image is virtual and upright
if image dist is pos then image is real and inverted
also magnification can tell me if the image is upright or inverted is it is pos then upright otherwise inverted. If magnification is postive the image distance is negative. I know ray diagrams help a lot but I need facts.
Is there more that I am missing?

Explanation / Answer

"If magnification is postive the image distance is negative." this is wrong as
magnification = - image distance / object distance
hence if mag is pos image distance is also pos.(since object distance is negative)

more facts

if mag is pos, image is upright

if mag is neg, image is inverted.

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