Multiple choice

Solve the following pair of equations : $y= 2x-6$ $y=0$

  1. $x= 7;y= 0$
  2. $x= -3;y= 0$
  3. $x= 0;y= -6$
  4. $x= 3;y= 0$
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D Correct answer
Explanation

Substitute y = 0 into the first equation: 0 = 2x - 6. This leads to 2x = 6, so x = 3. The solution is (3, 0).

AI explanation

Using the method of substitution, set y = 0 in the first equation y = 2x - 6. This gives 0 = 2x - 6, which simplifies to 2x = 6 and yields x = 3. The solution is x = 3, y = 0.

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