Which ratios form a proportion?

a.4/9 and 9/4
b4/11 and 6/13
c.4/10 and 10/25
d.3/5 and 9/25

Step-by-step explanation:

(A)

When cross multiply the fractions, we get

⇒ 4 × 4 = 9 × 9

⇒ 16 ≠ 36

So,  do not form a proportion.

(B)

When cross multiply the fractions, we get

⇒ 4 × 13 = 6 × 11

⇒ 52 ≠ 66

So,  do not form a proportion.

(C)

When cross multiply the fractions, we get

⇒ 4 × 25 = 10 × 10

⇒ 100 = 100

So,  form a proportion.

(D)

When cross multiply the fractions, we get

⇒ 3 × 25 = 9 × 5

⇒ 75 ≠ 45

So,  do not form a proportion.

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)