diff --git a/Grade 10/Math/MPM2DZ/Unit 3: Quadratic Functions.md b/Grade 10/Math/MPM2DZ/Unit 3: Quadratic Functions.md
index 918619a..26631ce 100644
--- a/Grade 10/Math/MPM2DZ/Unit 3: Quadratic Functions.md	
+++ b/Grade 10/Math/MPM2DZ/Unit 3: Quadratic Functions.md	
@@ -9,8 +9,8 @@
  - `Zeroes`: x-intercepts of parabola
  - `Vertex`: Maximum or minimum value on a parabola
  - `Optimal value`: y-value for vertex
- - `Domain`: List of all valid x-values for relation, expressed as $`D = {num, num2, num3}`$ or as a relation such as $`D = {x E R, x != 0, x < 50`$
- - `Range`: List of all valid y-values for relation, expressed as $`R = {num, num2, num3}`$ or as a relation such as $`D = {y E R, y != 0, y < 50`$
+ - `Domain`: List of all valid **x-values** for relation, expressed as $`D = {x, x_2, x_3}`$ or as a relation such as $`D = \{x \in \mathbb{R}, x =\not 0, x < 50\}`$
+ - `Range`: List of all valid **y-values** for relation, expressed as $`R = {y, y_2, y_3}`$ or as a relation such as $`R = \{y \in \mathbb{R}, y =\not 0, y < 50\}`$
  - `Relation`: Set of ordered pairs of numbers
  - `Function`: A relation in which no y-coordinates share an x-coordinate (e.g., circles are not functions)