@akhounm,

Yes, this is quite straightforward since support for math was added everywhere in Canvas a couple of years ago.

You need to use the LaTeX delimiters around the math content. When typing in a .tex file, you probably use $ as a delimiter. Since $ can be used for so much else, Canvas went with the more unique (but still standard) delimiters. Those are a backslash followed by an opening parentheses to start and a backslash followed by a closing parentheses to end. That's \ ( and \ ) but without the spaces between them. You can also use a \ [ and \ ] to make it display mode and centered on the line.

The community software also recognizes them, so if I type them the way you're supposed to, you won't be able to see it. That's why I put the space between them, but you should not when you type them in Canvas. I think if I put it in a code block it may work.

If a function \(f\) is continuous on the closed interval \([1,4]\), 
\(f(1)=6\), and \(f(4)=-1\), then which of the following must be true?

Here is the same thing outside a code block. Again the community software will interpret it like Canvas does.

If a function \(f\) is continuous on the closed interval \([1,4]\), \(f(1)=6\), and \(f(4)=-1\), then which of the following must be true?

Note that this approach does not immediately render the content because the page doesn't reload. That means you have to be careful to double check that it's in there correctly. You will need to save the question and perhaps reload the page before it renders properly.

The backtick ` that you are using is for variable substitution with new quizzes. You can now use variable substitution with formula questions. Just put the backticks around the variable name within the LaTeX.

If a function \(f\) is continuous on the closed interval \([`a`,`b`]\), 
\(f(`a`)=`c`\), and \(f(`b`)=`d`\), then which of the following must be true?