Class IX

The cost of 2 kg of apples and 1 kg of grapes on a day was found to be Rs.160. A linear equation in two variables to represent the above data is
  1. 2x + y = 160
  2. x + 2y = 160
  3. none of these.
  4. None of these
The geometrical representation of 5x + 7 = 0 as an eqaution in one varibale is
  1. x = 7/2
  2. x = -7/2
  3. x = -2/7
  4. x = -2/7
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)
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 value of p if (21,1) is a solution of px + 12y = 7 is
  1. -4.2
  2. -0.238095238
  3. -5
  4. -5
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