Answer:
the teacher gained 42 pounds in 21 years . Each year the teacher gained 2 pounds.
Step-by-step explanation:
187-145=42
2007-1986=21
42 divided by 21 = 2
2 pounds per year.
2007-1986 = 21 yrs
187-145 = 42 pounds
42 pounds /21 yrs = 2 pounds /yr
f(x) = 2x - 5
y=-2/3x+20/3
m=(y2-y1)/(x2-x1)
m=(4-6)/(4-1)
m=-2/3
y-y1=m(x-x1)
y-6=-2/3(x-1)
y=-2/3x+2/3+6
y=-2/3x+2/3+18/3
