diff --git a/packages/example/src/1week/01/__submit__/minsoo-web.test.ts b/packages/example/src/1week/01/__submit__/minsoo-web.test.ts
index 358e857..39fd6b8 100644
--- a/packages/example/src/1week/01/__submit__/minsoo-web.test.ts
+++ b/packages/example/src/1week/01/__submit__/minsoo-web.test.ts
@@ -1,7 +1,13 @@
 import { lineFunction } from './minsoo-web'
 
 describe('lineFunction', () => {
-  it('case: 1', () => {
-    expect(lineFunction()).toBe(7)
+  it('case: positive number', () => {
+    expect(lineFunction(2)).toBe(7)
+  })
+  it('case: negative number', () => {
+    expect(lineFunction(-2)).toBe(-1)
+  })
+  it('case: zero', () => {
+    expect(lineFunction(0)).toBe(3)
   })
 })
diff --git a/packages/example/src/1week/01/__submit__/minsoo-web.ts b/packages/example/src/1week/01/__submit__/minsoo-web.ts
index bd7cfe2..eb1484a 100644
--- a/packages/example/src/1week/01/__submit__/minsoo-web.ts
+++ b/packages/example/src/1week/01/__submit__/minsoo-web.ts
@@ -1,5 +1,3 @@
-const x = 2
-
-export function lineFunction() {
-  return 2 * x + 3
+export function lineFunction(arg: number) {
+  return 2 * arg + 3
 }