Macaroni Salad with Tomatoes & Zucchini

Ingredients

• 16 oz Pasta, macaroni, elbow, whole wheat, dry
• 4 cups Grape tomato (s)
• 1 small Zucchini
• 1/2 cup Red onion
• 7 tbsp Mayonnaise, low fat
• 2 1/2 tbsp Red wine vinegar
• 2 tbsp Greek yogurt, plain, fat-free
• 2 tsp Dijon mustard
• 1/4 tsp Oregano, dried
• 1 pinch Salt and pepper
• 1/4 tsp Garlic powder