diff --git a/test/tests.cc b/test/tests.cc
index cebd885..e2f2ef4 100644
--- a/test/tests.cc
+++ b/test/tests.cc
@@ -20,5 +20,11 @@ int main()
     Matrix mult = m * i;
     cout << "mult:" << endl << mult;
 
+    m *= m;
+    cout << "m^2:" << endl << m;
+
+    m *= m;
+    cout << "m^4:" << endl << m;
+
     return 0;
 }
diff --git a/util/Matrix.cc b/util/Matrix.cc
index 3cdc5e1..62744cf 100644
--- a/util/Matrix.cc
+++ b/util/Matrix.cc
@@ -191,6 +191,13 @@ Matrix Matrix::getInverse()
     return m;
 }
 
+Matrix & Matrix::operator*=(const Matrix & other)
+{
+    Matrix temp = (*this) * other;
+    (*this) = temp;
+    return (*this);
+}
+
 Matrix operator*(const Matrix & m1, const Matrix & m2)
 {
     Matrix res;
diff --git a/util/Matrix.h b/util/Matrix.h
index 964aea2..84b780e 100644
--- a/util/Matrix.h
+++ b/util/Matrix.h
@@ -15,6 +15,7 @@ class Matrix
         static Matrix identity();
         double determinant();
         Matrix getInverse();
+        Matrix & operator*=(const Matrix & other);
 
     protected:
         double m_matrix[4][4];
diff --git a/util/Transform.cc b/util/Transform.cc
index 74c051e..f1fc8f5 100644
--- a/util/Transform.cc
+++ b/util/Transform.cc
@@ -8,7 +8,11 @@ Transform::Transform()
 
 void Transform::translate(double x, double y, double z)
 {
-    /* TODO: fill in */
+    Matrix t = Matrix::identity();
+    t[0][3] = x;
+    t[1][3] = y;
+    t[2][3] = z;
+    m_matrix *= t;
 }
 
 void Transform::rotate(double amt, double xv, double yv, double zv)