Answer:
Step-by-step explanation:
(5,1) ; m = -3
Line equation: (y - y₁)= m(x - x₁)
y - 1 = -3 * (x - 5)
y - 1 = -3x + 15
3x + y = 15 + 1
3x + y = 16
2
8
4 miles= 30= half hour x 2 equals 60= hour so its basic math 4 x 2