2. Questions Bank
  3. 10th Class
  4. Mathematics
  5. Pair of Linear Equations in Two Variables

10th Class Mathematics Pair of Linear Equations in Two Variables Question Bank Pair of Linear Equations in Two Variables

  • question_answer
    Which of the following linear equation coincide with the line\[4x+5y=15\]?

    A)  \[8x+10y=25\]

    B)  \[2x+3y=7\]

    C)  \[7x+14y=17\]

    D)  \[12x+15y=45\]

    Correct Answer: D

    Solution :

    For coincident lines, \[\frac{{{a}_{1}}}{{{a}_{2}}}=\frac{{{b}_{1}}}{{{b}_{2}}}=\frac{{{c}_{1}}}{{{c}_{2}}}\] i.e.,  \[\frac{4}{12}=\frac{5}{15}=\frac{15}{45}\]   or  \[\frac{1}{3}=\frac{1}{3}=\frac{1}{3}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner