1. Writing a direct variation equation

2. write a direct variation problem when y = 20 and x = 10 y = kx 20 = k·10 k = 2 y = 2x

3. write a direct variation problem when y = -15 and x = 3 y = kx -15 = k·3 k = -5 y = -5x

4. write a direct variation problem when y = 35 and x = -7 y = kx 35 = k·-7 k = -5 y = -5x

5. write a direct variation problem when y = -100 and x = -25 y = kx -100 = k·-25 k = 4 y = 4x

6. write a direct variation problem when y = 20 and x = 10 y = kx

7. write a direct variation problem when y = -15 and x = 3 y = kx

8. write a direct variation problem when y = 35 and x = -7 y = kx

9. write a direct variation problem when y = -100 and x = -25 y = kx