Step-by-step explanation:
To know how much does the airplane weighs, we need to find the linear equation that relates the amount of fuel x and the weight of the plane y.
First, we need to find the slope of the line. It can be calculated as:
Where x1 and x2 are two amounts of fuel and y1 and y2 are the respective weight of the plane. So, replacing x1 = 18 gallons, y1 = 2017 pounds, x2 = 52 gallons, y2 = 2238 pounds, we get:
Now, the equation of the line will be
Where m = 6.5 and x1 = 18 gallons and y1 = 2017 pounds