Put a point at -9 because that is the y-intercept.then from the point -9 count up 5 and count over 3.
Answer: finding slope (-4, 1), (1,-2) : m= -3/5
Answer: 12.75 inches
Step-by-step explanation:
Let x represent last year's rainfall.
Multiply by 0.8 since this year was 20% less.
x(0.8)= 10.2
x = 12.75