Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to find:

- the steepest slope
- the flattest slope
- the greatest y-intercept
- the least y-intercept

### Hint

What does the coefficient of X or Y do to the slope?

### Answer

Steepest: -9

Flattest: -1/9

Highest: 9

Lowest: 1/9

Flattest: -1/9

Highest: 9

Lowest: 1/9

Source: Dane Ehlert