iedesa apu

The slope of the line joining the point (2,2p) and (4,1) is -3/2. Then p=……….
A.2 B.-2 C.1/2 D.-1/2 E.2/3

1. If the points (1,1),(3,2) and (9,k) are on the same straight line , then k=……..
   A.4 B.5 C.6 D.7 E.21
   17.The distance between the points (3,8) and (-5,-7) is
   A.8 B.15 C.17 D.18 E.21
2. The line 2x+3y=6 cuts the X-axis at
   A. (0,3) B.(0,2) C.(0,6) D.(2,0) E.(3,0)
   1 B. 1:1 C. 3:2 D. 1:2 E. 4:3
3. If 2x2 -5xy + 3y2=0, then x:y=……….
   A. 2:5 B. 5:3 C. 1:1 D. 1:1 (or) 2:3 E. 3:2 (or) 1:1
4. If xy = x + y, where x and y are real numbers, then y cannot be
   A.0 B.1 C. -1 D.2 E. -2
5. If 3a = 4b = 5c, then 1/a:1/b:1/c =…………
   A. 1/3:1/4:1/5 B.1/5 :1/4: 1/3 C. 1/4:1/5:1/3 D. 3:4:5 E.5:4:3
6. If x:y:z =2:3:4 and x + y +z = 18 , then xyz = …………
   A.12 B.48 C.192 D.256 E.512
7. If (5x-4y) = 4(2x-3y) , then x : y = ……….
   A. 3:8 B. 8:3 C. 12: 17 D. 6:-13 E. 13:18
8. If x:y = 2:3 , find (x2 + y2):(x2-y2).