SOLUTION: Let c be a constant. The simultaneous equations x-y=2 , cx+y=3 have a solution (x, y ) inside Quadrant I if and only if (A) c = -1 (B) c > -1 (C) c < 3/2 (D) 0 < c < 3/2 (E)

SOLUTION: Let c be a constant. The simultaneous equations x-y=2 , cx+y=3 have a solution (x, y ) inside Quadrant I if and only if (A) c = -1 (B) c > -1 (C) c < 3/2 (D) 0 < c < 3/2 (E) - l

Question 1064998: Let c be a constant. The simultaneous equations
x-y=2 , cx+y=3
have a solution (x, y ) inside Quadrant I if and only if
(A) c = -1 (B) c > -1 (C) c < 3/2 (D) 0 < c < 3/2 (E) - l < c < 3/2
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Choice E

If using Elimination Method to find x and y,

x and y both must be positive for quadrant 1.

If choosing numerator and denominator both positive,

and

Trying both numerator and denominator as negative will not work.
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