One Solution, No Solution, or Many Solutions Quick Check

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Question
Determine the number of solutions to this system of linear equations:
y=x+5

y=−x+5
(1 point)
Responses

2
2

1
1

infinite
infinite

0

1 answer

To determine the number of solutions to the given system of linear equations:

  1. y = x + 5
  2. y = -x + 5

Let's analyze the two equations.

First, we can set the two equations equal to each other to find any points of intersection:

\[ x + 5 = -x + 5 \]

Now, add \(x\) to both sides:

\[ x + x + 5 = 5 \]

This simplifies to:

\[ 2x + 5 = 5 \]

Next, subtract 5 from both sides:

\[ 2x = 0 \]

Now, divide both sides by 2:

\[ x = 0 \]

Now that we have \(x\), we can substitute \(x = 0\) back into either equation to find the corresponding \(y\):

Using the first equation:

\[ y = 0 + 5 = 5 \]

So the solution to the system of equations is \( (0, 5) \).

Since we found one unique solution where both lines intersect, the answer is:

1