The slope of the line passing through (-1,3) and (-4,0) is:

Step-by-step explanation:

first mark your points

(-1,3) (-4,0)

x1 y1. x2 y2

solve with given points using the formula:

y2-y1/x2-x1

=

0-(3)

-4-(-1). = -3/-3 = 1 (slope)

plug slope and one pair of points into (y=mx+b)

(0) = -4(1)+b

=-4+b

4=b

add everything together:

y=x+4

a. x = 60°

Step-by-step explanation:

because

x + 20° = 80° [ by alternate angle pair ]

so x = 80° - 20° = 60°

i hope it will help you