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Matrices and Determinants question

2020 · 9 Jan · Shift 1 · Q33
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  5. /2020 · 9 Jan · Shift 1 · Q33

Matrices and Determinants question

2020 · 9 Jan · Shift 1 · Q33

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1
If for some α\alphaα and β\betaβ in R, the intersection of the following three places x + 4y – 2z = 1 x + 7y – 5z = b x + 5y +α\alphaα z = 5 is a line in R3, then α\alphaα+β\betaβ is equal to :
  1. A
    -10
  2. B
    0
  3. C
    10
  4. D
    2
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