Suppose that the consumer price index? (CPI), which measures the cost of a typical package of consumer? goods, stood at1259 in 1990 and1459
in 2000
Let x equal=0 correspond to? 1990, and estimate the CPI in1998
CPI in 1998?
CPI in 2001?
(Assume that the data can be modeled by a straight? line)
Which linear equation best models the? CPI?
y=-2x+1259
y=2x-1259
y=2x+1259
