A solution of a dye was analyzed by spectrophotometry, and the following calibration data were collected.
Dye Conc.(Y) (M) Absorbance(X) at 475 nm
.50 x 10^-6 0.24
1.5 x 10^-6 0.36
2.5 x 10^-6 0.44
3.5 x 10^-6 0.59
4.5 x 10^-6 0.70
Construct a calibration plot, and determine the slope and intercept.