Question

Rewrite the equation 2y - 4x = 10 in function notation where f(x)= y.
f(x)=

Answer 1

Answer:

f(x) = 5 + 2x

y+4x^2-1 is the same as y=-4x^2+1, then replace y with f(x); f(x)=-4x^2+1. After you do that, replace x with 2; f(2)=-4(2)^2+1. 2^2=4, 4 times -4=-16, -16+1=-15. So f(2)=-15.

Answer 2

f(x) = 5 + 2x

Explanation:

2y - 4x = 10

+4x +4x

2y = 10 + 4x

Now we have a new equation but we have to isolate the variable y.

`(2y)/(2)` =
`(10 + 4x)/(2)` Then divide to solve for y.

y = 5 + 2x

Since f(x) is the same thing/equal to y we can just replace that.

f(x) = 5 + 2x

Hope that helps and have a great day!