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Given a system of linear equations where the lines each have the same slope. Which of the following statements are TRUE regarding the number of possible solutions? Select all that apply.

a) If the lines are the same line, they have all of their points in common: infinitely many solutions.
b) 1 solution
c) If the lines are parallel and separate (different y-intercept), they have no points in common: no solutions.
d) The number of solutions cannot be determined from this information.

User Stargateur
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Final answer:

For a system of linear equations with the same slope, if the lines are the same (same y-intercept), there are infinitely many solutions. If the lines have different y-intercepts, they are parallel and separate, resulting in no solutions. Statement d) is incorrect since the information provided does allow determination of the number of solutions.

Step-by-step explanation:

When dealing with a system of linear equations where the lines have the same slope, we encounter specific scenarios regarding the number of possible solutions. Here's a breakdown:

  • a) Infinitely many solutions: This is true if the lines are in fact the same line, meaning they have the same slope and y-intercept. All points would be in common, so the system has infinitely many solutions.
  • b) 1 solution: This would not occur if the lines have the same slope unless they are the same line, which is covered in the previous point.
  • c) No solutions: This would be the case if the lines are parallel and separate, which happens when they have the same slope but different y-intercepts. The lines would never intersect, resulting in no solutions.
  • d) The number of solutions cannot be determined from this information: This statement is false since we can determine the number of solutions based on whether the lines are the same or have different y-intercepts.

In conclusion, the correct statements regarding the number of possible solutions for a system of linear equations with the same slope are a) Infinitely many solutions and c) No solutions.

User Vincent Barrault
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