Question

The sqaure of x equals 4 times the square of y. If x is 1 more than twice y, what is the value of x?

-4

-1/2

-1/4

1/4

1/2

Answer 1

\[\frac{ 1 }{ 2 }\]

Answer 2

x^2 = 4y^2
x = 2y + 1
2y = x - 1
y = (x-1)/2

substitute for y in fitsy equation:
x^2 = 4[(x-1)/2]^2
x^2 = (x-1)^2
x^2 = x^2 - 2x + 1
2x = 1
x = 1/2

Answer 3

thank u all!

Answer 4

yw