The marriage rate per 1000 population for the years 1987-2009 is given by M(x)=-0.152x+17.074, whore x is the number of years after 1980 a. Why is this a linear function, with y = M(x)? b. What is the slope? What does this slope say about the number of unmarried women who got married? a. Choose the correct answer below. OA. This a linear function because x and y are not in separate terms. OB. This a linear function because y is alone on the left side of the equation. OC. This a linear function because x and y appear to the second power. OD. This a linear function because each of the variables x and y appear to the first power and it is written in the form y= ax + b. b. What is the slope? (Type an integer or a decimal.) What doos this slopo say about the number of unmarried women who got married? Choose the correct answer below. OA. It increased at a rate of 17.074 per thousand per year. OB. It increased at a rate of 0.152 per thousand per year. OC. It decreased at a rate of 0.152 per thousand per year. 7.074 por thousand per year.