Question

What is the equation of the blue line

Answer 1

Step-by-step explanation:

TWO points on this LINE : (-1 , 0) AND (0 , -1)

EQUATION of this LINE :

$(y - 0) = ( \frac{0 + 1}{ - 1 - 0} )(x + 1) \\ \\ y = - 1(x + 1) \\ \\ y + x + 1 = 0 \\ \\ x + y + 1 = 0.$