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Louisa wants to use the elimination method to solve the system of equations shown below.  She decides to multiply the second equation by a number in order to eliminate the x terms.  What should Louisa multiply by and what is the new equation?3x + 4y = 40x + 6y = 18ResponsesLouisa should multiply by -3.  The result is -3x - 18y = - 54. Louisa should multiply by -3.  The result is -3x - 18y = - 54. Louisa should multiply by 3.  The result would be 3x + 18y = 18Louisa should multiply by 3.  The result would be 3x + 18y = 18Louisa should multiply by -3.  The result is -3x + 6y = 18.Louisa should multiply by -3.  The result is -3x + 6y = 18.Louisa should multiply by 3.  The result is 3x + 6y = 18.

Question

Louisa wants to use the elimination method to solve the system of equations shown below.  She decides to multiply the second equation by a number in order to eliminate the x terms.  What should Louisa multiply by and what is the new equation?3x + 4y = 40x + 6y = 18ResponsesLouisa should multiply by -3.  The result is -3x - 18y = - 54. Louisa should multiply by -3.  The result is -3x - 18y = - 54. Louisa should multiply by 3.  The result would be 3x + 18y = 18Louisa should multiply by 3.  The result would be 3x + 18y = 18Louisa should multiply by -3.  The result is -3x + 6y = 18.Louisa should multiply by -3.  The result is -3x + 6y = 18.Louisa should multiply by 3.  The result is 3x + 6y = 18.

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Solution

Louisa should multiply by -3. The result is -3x - 18y = -54.

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