Cars lose value with both increase age and increased mileage. According to Kelley Blue Book, in June 2018, a black 2014 Chevy Cruze in excellent condition with 25,000 miles had a trade-in value of $8,168, while the same car at the same time, but with 30,000 miles had a trade-in value of $7,985. Assume the value of the car is a linear function of how many miles it had on it. Write the data about the two cars as ordered pairs. Find the slope of the line between these two points. Write the equation in standard form.
a) (25000, 8168), (30000, 7985); Slope = -0.038; Equation: y = -0.038x + 9780
b) (8168, 25000), (7985, 30000); Slope = -0.038; Equation: y = -0.038x + 9780
c) (30000, 7985), (25000, 8168); Slope = 0.038; Equation: y = 0.038x + 8168
d) (7985, 30000), (8168, 25000); Slope = 0.038; Equation: y = 0.038x + 8168