The function can be used to find y, the number of gallons of fuel remaining in the tank of the semi-truck after it has traveled x miles is -1/10x + 240.
What is the equation of a straight line?
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)
m = -45/450
m = -1/10
by substituting the value of c and m in the equation gives:
y = mx + c
Therefore, the answer is -1/10x + 240.
Learn more about linear equations here:
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