Why is 4:6 equivalent to 2:3

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?