In which set of ordered pairs is y a function of x? A . {(–1, 2), (0, 1), (0, 2), (1, 1)}
B . {(–4, 1), (–3, 1), (–2, 1), (–1, 1)}
C . {(1, –4), (1, –3), (1, –2), (1, –1)}
D . {(2, 5), (3, 6), (6, 5), (2, 7)}
The correct answer is B, but I need can explanation on why it’s B

c - they will have the same distribution

step-by-step explanation:

this is the only one that could make sense. : )

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

step-by-step explanation: it is d