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In 2014, the average gas price in a certain state was $3.50 per gallon. In 2018, it dropped to $2.80 per gallon. Let x represent the year and y be the average gas price. Use the ordered pairs (2014, 3.50) and (2018, 2.80) to find the slope of the line that passes through these points. Interpret the slope in the context of this problem.

Respuesta :

Answer:

slope= - 0.175  and is average decrease of price of gas per gallon per year

Step-by-step explanation:

slope= (y2-y1)/(x2-x1)

slope = (2.80-3.50)/(2018-2014)

slope= -0.7/4

slope= - 0.175

as along y axis it is average gas price per gallon and along x axis it is time in years and in gradient or slope both change so gradient is change in average gas price per gallon per year as it is negative so it shows average decrease of price of gas per gallon per year