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128 › McGraw Hill 500 GRE® Math Questions
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 422. Which is an equation of the preceding graph? Indicate all such equations.
 (A) = − + −6 52y x x 
 (B) = − + +6 52y x x 
 (C) = − −6 52y x x 
 (D) = − +6 52y x x 
 (E) = − − +( 3) 42y x 
 (F) = − − −( 3) 42y x 
 423. If + + = + − + −3( 1)( 1) (4 6)
2
2ax bx c x x x x , which of the following sums 
CANNOT equal + +a b c ? Indicate all such sums.
 (A) −1 
 (B) 0
 (C) 1
 (D) 2
 (E) 5
 424. Last week, Javier worked seven hours more than three times the number of 
hours that Devlin worked. If Javier worked j hours and Devlin worked d 
hours, where j and d are integers, which of the following is a possible value 
for j? Indicate all such values.
 (A) 10
 (B) 15
 (C) 18
 (D) 22
 (E) 40
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