Actioned PJ comments

Author: m-messer

docs/teacher/reference/response_area_components/Expression.md

@@ -2,8 +2,6 @@
 
 > **⚠️ DEPRECATED:** This feature is deprecated and will be removed in a future version. Please use [Math_Single_Line](Math_Single_Line.md) instead.
 
-This response area is very similar to [Text](Text.md), differing in that it can display how the user's response was interpreted back to them through the 'live preview' feature. This works using the grading function, providing a `feedback.response_latex` field, which gets rendered.
-
 ## Evaluation Function Options
 
 ### [isSimilar](https://lambda-feedback.github.io/user-documentation/user_eval_function_docs/isSimilar/)

docs/teacher/reference/response_area_components/Math_Multi_Line.md

@@ -1,6 +1,6 @@
 # Math_Multi_Line
 
-This response area is an extension of [Math_Single_Line](Math_Single_Line.md), and provided multi-line math support. For example, when writing mathematical proofs.
+This response area is a general handwriting input that produces markdown output. Uses the MathPix API, which includes mathematics as dollar-delimited LaTeX.
 
 ## Evaluation Function Options
 

docs/teacher/reference/response_area_components/Math_Single_Line.md

@@ -1,6 +1,6 @@
 # Math_Single_Line
 
-This response area allows users to type, write or upload mathematics, and then displays how the user's response was interpreted back to them through the 'live preview' feature. This works using the evaluation function, providing a `feedback.response_latex` field, which gets rendered.
+This response area allows users to type, write or upload mathematics, and then displays how the user's response was interpreted back to them through the 'live preview' feature. 
 
 ## Evaluation Function Options