diff --git a/education/math/MATH1210 (calc 1)/Derivatives.md b/education/math/MATH1210 (calc 1)/Derivatives.md
index ad4e4be..206c18e 100644
--- a/education/math/MATH1210 (calc 1)/Derivatives.md	
+++ b/education/math/MATH1210 (calc 1)/Derivatives.md	
@@ -18,7 +18,7 @@ The above formula can be used to find the *derivative*. This may also be referre
 # Point Slope Formula (Review)
 $$  y - y_1 = m(x-x_1) $$
 Given that $m = f'(a)$ and that $(x_1, y_1) = (a, f(a))$, you get the equation:
-$$ y - f(a) = f'(a)(x - a)
+ $$ y - f(a) = f'(a)(x - a) $$
 
 # Line Types
 ## Secant Line