coordinate geometry/probability

1. In a xy plane at what 2 points dpes the line y = (x+a)(x+b) intersec the x-axis. a. a+b=-1 b. the graph intersects the y axis at (0,-6) 2. A decorater has to choose 2 chairs and 2 tables from a warehouse such that all are diffrent. if there are 5 diffrent chairs and 150 combinations possible, how...

I did it this way -

xy+z=z
xy = 0
i.e x=0 or y = 0

so a. x!0 then y = 0, so |x-y| will be greater than 0
frm b. y=0 so x!0, so |x-y| again > 0.

so D but ans is A .. ??

int

if a, b and c are integers, whats the value of a?

a. (a-7)(b-7)(c-7)=0
b. bc = 18

Just as.. so / Just like ... so

1. Just as William Shakespeare was the preeminent poet of England, so Robert Frost was the preeminent poet of the United States (A) Just like William Shakespeare was the preeminent poet of England, so Robert Frost (B) Just as William Shakespeare was the preeminent poet of England, so Robert Frost (C...

Modulus

What is the distance between a and b on the number line?

(1) |a| – |b| = 6
(2) ab > 0

A AA - 2
B AB - 2
C AC BC - 3 (ALPHABETIC OREDR TO BE MAINTAINED)
D AD BD CD - 4
E - 1

2+ 2 +3+ 4 + 1 = 12 and alphabets used 5

stsmt one - it can be fractions .. say -1/2 and -1/4. still not sufficient
stmt 2 - chose m = -3 and n = -2 m-n = -1 > n (-2) m/n 3/2 >1
next chose m = -2 and n = -3; m-n = 1 (> n) and 2/3 < 1

togetehr they make no sense so ans = E