posted by Leslie on .
1.The square of x is equal to 4 times the square od y. If x is 1 more than twice y, what is the value of x?
2.In the xy-coordinate plane, lines L an Q are perpendicular. If line L contains the points (0,0) and (2,1), and line Q contains the points ( 2,1) AND (0,T) What is the value of T?
3. For all positivw integers x, let xÄ
be defined to be (x-1)(x+1). Which of the following is equal to 6Ä-5Ä?
Do you have any thinking on these? Surely you do not want us to give you answers.
1. X^2= 4Y^2 and x=2y+1
Sooo i substitute
Find the square root of both sides
Solve for y
Substitue into X=2y=1
But that's not an option.What did i do wrong?