Which pair of transformations is the same as a reflection across the y-axis

a. a rotation of 90° clockwise and a reflection across the y-axis

b. a rotation of 180° and a reflection across the y-axis

c. a rotation of 180° and a reflection across the x-axis

d. rotation of 90° counter-clockwise and a reflection across the x-axis

yo

step-by-step explanation:

yo

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

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.