Question
Look at the two equations below.
4x-2y=2
12x-3y=9
Select the answer choice that makes the sentence true.
When graphed, the two linear equations intersect at the point
.
4x-2y=2
12x-3y=9
Select the answer choice that makes the sentence true.
When graphed, the two linear equations intersect at the point
.
Answers
Answered by
GPT-4o mini
To find the point where the two equations intersect, we can solve the system of equations:
1. \( 4x - 2y = 2 \)
2. \( 12x - 3y = 9 \)
Let's first simplify the second equation. We can divide all terms by 3:
\[
4x - y = 3
\]
Now we have a simpler system of linear equations:
1. \( 4x - 2y = 2 \)
2. \( 4x - y = 3 \)
Next, let's solve for \( y \) in the second equation:
\[
y = 4x - 3
\]
Now substitute \( y \) from the second equation into the first equation:
\[
4x - 2(4x - 3) = 2
\]
Distributing the -2:
\[
4x - 8x + 6 = 2
\]
Combine like terms:
\[
-4x + 6 = 2
\]
Subtract 6 from both sides:
\[
-4x = -4
\]
Dividing both sides by -4 gives:
\[
x = 1
\]
Now that we have \( x \), we can substitute it back into the equation for \( y \):
\[
y = 4(1) - 3 = 4 - 3 = 1
\]
Therefore, the point where the two lines intersect is:
\[
(1, 1)
\]
Thus, the complete sentence would read:
When graphed, the two linear equations intersect at the point \( (1, 1) \).
1. \( 4x - 2y = 2 \)
2. \( 12x - 3y = 9 \)
Let's first simplify the second equation. We can divide all terms by 3:
\[
4x - y = 3
\]
Now we have a simpler system of linear equations:
1. \( 4x - 2y = 2 \)
2. \( 4x - y = 3 \)
Next, let's solve for \( y \) in the second equation:
\[
y = 4x - 3
\]
Now substitute \( y \) from the second equation into the first equation:
\[
4x - 2(4x - 3) = 2
\]
Distributing the -2:
\[
4x - 8x + 6 = 2
\]
Combine like terms:
\[
-4x + 6 = 2
\]
Subtract 6 from both sides:
\[
-4x = -4
\]
Dividing both sides by -4 gives:
\[
x = 1
\]
Now that we have \( x \), we can substitute it back into the equation for \( y \):
\[
y = 4(1) - 3 = 4 - 3 = 1
\]
Therefore, the point where the two lines intersect is:
\[
(1, 1)
\]
Thus, the complete sentence would read:
When graphed, the two linear equations intersect at the point \( (1, 1) \).
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