Class IX

The value of p if (21,1) is a solution of px + 12y = 7 is
  1. -4.2
  2. -0.238095238
  3. -5
  4. -5
Linear equation in one variable is
  1. 2x = y
  2. y² = 3y + 5
  3. 4x - y = 5
  4. 4x - y = 5
The graph of the equation x + y = 4
  1. intersects x-axis only
  2. intersects both the axis
  3. intersects y-axis only
  4. intersects y-axis only
The graph of a linear equation y=9/5x+32 cuts the y-axis at the point
  1.  (-32 , 0)
  2.  (0 , -32)
  3.  (-32 , 0)
  4.  (32 , 0)
If F = (9/5)C + 32, then the value of F if the value of C is 30 is
  1. 84
  2. 85
  3. 86
  4. 87
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