diff --git a/wyk/02_Regresja_liniowa_1.ipynb b/wyk/02_Regresja_liniowa_1.ipynb
index 1d84819..9371675 100644
--- a/wyk/02_Regresja_liniowa_1.ipynb
+++ b/wyk/02_Regresja_liniowa_1.ipynb
@@ -12,6 +12,13 @@
     "# 2. Regresja liniowa – część 1"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -38796,7 +38803,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": 40,
    "metadata": {
     "slideshow": {
      "slide_type": "subslide"
@@ -38831,7 +38838,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 25,
+   "execution_count": 41,
    "metadata": {
     "slideshow": {
      "slide_type": "notes"
@@ -38852,7 +38859,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 42,
    "metadata": {
     "scrolled": true,
     "slideshow": {
@@ -38863,7 +38870,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "3cd73724ec0d4ba3909b7e1c0c3506c7",
+       "model_id": "f677dd42b3db49618a8a859ed9d9e3b8",
        "version_major": 2,
        "version_minor": 0
       },
@@ -38880,7 +38887,7 @@
        "<function __main__.slide5(steps)>"
       ]
      },
-     "execution_count": 26,
+     "execution_count": 42,
      "metadata": {},
      "output_type": "execute_result"
     }