Question

Which function can be used to find y, the number of gallons of fuel remaining in the tank of

the semitruck after it has traveled x miles?

Answer 1

`y=(-1)/(10)x+240`

Explanation:

The question is not complete, the graph of the question is attached.

The equation of a straight line can be represented by:

y = mx + c

Where m is the slope of the graph and c is the intercept on the y axis. From the graph attached, the intercept on the y axis is 240, therefore c = 240. To find the slope, we use the equation:

m = change in y / change in x

m = (195 - 240) / (450 - 0) = -45/450 = -1/10

substituting the value of c and m in the equation gives:

`y = mx+c\\`

`y=(-1)/(10)x+240`