Oh My God!

Oh my god! I just had my Intro to Quantitative Analysis lecture and the lecturer made three mistakes. Firstly, and not so importantly he spelt vertical as 'verticle.

Secondly he said that an increase in inflation would lead to a decrease in interest rates. Which is wrong because if there was high inflation the RBA would increase interest rates so as to slow spending and encourage savings.

Thirdly he drew the graph for y=a+bx wrong. At least I am very certain he did. Below on the left is a picture of what he did and on the right what I think it should be.