A parents’ group takes a survey about the number of times their children change clothes in a week. The data are recorded in a table where x represents the age of the child and y represents the number of clothes changes. x 1 1 2 3 3 4 4 5 6 6 y 20 18 17 18 15 12 14 12 11 12 What is the equation of the best-fit line for the data? Use a graphing calculator and round all numbers to the nearest hundredth. A y=−1.59x+20.47y is equal to negative 1 point 5 9 x plus 20 point 4 7 B y=−0.53x+11.45y is equal to negative 0 point 5 3 x plus 11 point 4 5 C y=11.45x−0.53y is equal to 11 point 4 5 x minus 0 point 5 3 D y=20.47x−1.59

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Step-by-step explanation:

hbklb lkb  jlb l

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.