Question
Solve the given system of linear equations by inspection.
y=35x−5
y=−35x−5
(1 point)
Responses
infinitely many solutions
infinitely many solutions
(0,−5)
left parenthesis 0 comma negative 5 right parenthesis
(−5,0)
left parenthesis negative 5 comma 0 right parenthesis
no solution
y=35x−5
y=−35x−5
(1 point)
Responses
infinitely many solutions
infinitely many solutions
(0,−5)
left parenthesis 0 comma negative 5 right parenthesis
(−5,0)
left parenthesis negative 5 comma 0 right parenthesis
no solution
Answers
GPT-4o mini
To solve the system of equations by inspection, let's analyze the given equations:
1. \( y = 35x - 5 \)
2. \( y = -35x - 5 \)
These two equations represent two straight lines.
The first equation \( y = 35x - 5 \) has a positive slope of 35, which means it rises steeply as \( x \) increases. The second equation \( y = -35x - 5 \) has a negative slope of -35, meaning it falls steeply as \( x \) increases.
To find the points of intersection, set the right-hand sides of both equations equal to each other:
\[
35x - 5 = -35x - 5
\]
Now, simplify this equation:
1. Add \( 35x \) to both sides:
\[
35x + 35x - 5 = -5
\]
2. Combine like terms:
\[
70x - 5 = -5
\]
3. Add 5 to both sides:
\[
70x = 0
\]
4. Divide both sides by 70:
\[
x = 0
\]
Now, substitute \( x = 0 \) back into either original equation to find \( y \):
Using the first equation:
\[
y = 35(0) - 5 = -5
\]
So, we have the point of intersection \( (0, -5) \).
Since the two lines have different slopes, they will intersect at this single point. Therefore, the solution to the system is:
\[
\text{(0, -5)}
\]
Thus, the correct response is:
**(0, −5)**
1. \( y = 35x - 5 \)
2. \( y = -35x - 5 \)
These two equations represent two straight lines.
The first equation \( y = 35x - 5 \) has a positive slope of 35, which means it rises steeply as \( x \) increases. The second equation \( y = -35x - 5 \) has a negative slope of -35, meaning it falls steeply as \( x \) increases.
To find the points of intersection, set the right-hand sides of both equations equal to each other:
\[
35x - 5 = -35x - 5
\]
Now, simplify this equation:
1. Add \( 35x \) to both sides:
\[
35x + 35x - 5 = -5
\]
2. Combine like terms:
\[
70x - 5 = -5
\]
3. Add 5 to both sides:
\[
70x = 0
\]
4. Divide both sides by 70:
\[
x = 0
\]
Now, substitute \( x = 0 \) back into either original equation to find \( y \):
Using the first equation:
\[
y = 35(0) - 5 = -5
\]
So, we have the point of intersection \( (0, -5) \).
Since the two lines have different slopes, they will intersect at this single point. Therefore, the solution to the system is:
\[
\text{(0, -5)}
\]
Thus, the correct response is:
**(0, −5)**