5) through: (4, -2), slope = -1
1.

y = - x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - 1, thus

y = - x + c ← is the partial equation

To find c substitute (4, - 2) into the partial equation

- 2 = - 4 + c ⇒ c = - 2 + 4 = 2

y = - x + 2 ← equation of line

8640 sq ft

Step-by-step explanation: