If ` x = - y and y gt 0`, which of the following is wrong ?

If x + y gt 5 and x - y gt 3 , then which of the following inequalities gives all the possible values of x ?

For all nonzero numbers x and y, the operation grad is defined by the equation x grad y = (|x|)/(x^(2))+(y^(2))/(|y|) when x gt y and by the equation x grad y = (|x|)/(y^(2))-(x^(2))/(|y|) when x le y . If x grad y lt 0 , then which of the following could be true ? I. x^(3)=y^(3) II. (y+x)(y-x)gt 0 III. x-y gt 0

Read the information given below and answer the questions that follow : The following functions have been defined : la(x, y, z) ="min" (x+y, y+z) "le" (x,y,z) ="max" (x-y, y-z) ma (x,y,z) =(1//2) ["le"(x,y,z) +la (x,y,z)] Given that x gt y gt z gt 0 , which of the following is necessarily true?

If W gt X, X gt Y and Y gt Z then which of the following conciusions is definitely wrong ?

If x and y are real numbers such that x gt y and |x| gt |y| ,then which one of the following is correct ?

x gt 2, y gt -1 the which of the following holds good ?

If y=k^(-(2)/(3)) , where k gt y gt0, which of the following equations gives k in terms of y?

y gt 2x -1 2x gt 5 Which of the following consists of the y-coordinates of all the points that satisfy the system of inequalities above?

If xylt0 , which of the following must be true? I. x+y=0 II. 2x-2ylt0 III. x^(2)+y^(2)gt0

If x^(2)-7y=8, x-y=1 , and y gt 0 , what is the value of y ?