Question

A scatter plot was made with a trend line that had an equation of y = -0.25x + 85, where y is the total number of cases of the flu and x is the total number of students who recieved the flu vaccine.

Predict how many students received a flu vaccine if a school had 65 cases of the flu.

Answer 1

80 students received a flu vaccine

Explanation:

1. graph the equation.

2. Go to 65 on the y-axis.

3. Go to 80 on the x-axis.

4. If the line stops at the point (80,65) then for the 65 cases of the flu at school, 80 students received the vaccine.