Question
upstudy study bank question image url

Question 20 Pause Zoom Two lines are graph on a coordinate plane. The equation of the first line is \( 4 x+4 y=1 \) and the equation of the second line is \( x+y=-8 \). Which staternent about the two lines is true? A. The lines are parallel. B. The lines are the same line. C. The lines are perpendicular. D. Both lines intersect at point \( (0,-8) \).

Ask by Mckenzie Morrison. in the United States
Jan 24,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The two lines are parallel.

Solution

Let's analyze the two given lines: 1. **First Line:** \( 4x + 4y = 1 \) - To find the slope, rewrite the equation in slope-intercept form (\( y = mx + b \)): \[ 4y = -4x + 1 \implies y = -x + \frac{1}{4} \] - **Slope (m₁):** \(-1\) 2. **Second Line:** \( x + y = -8 \) - Similarly, rewrite in slope-intercept form: \[ y = -x - 8 \] - **Slope (m₂):** \(-1\) **Comparing the Slopes:** - Both lines have the same slope (\(-1\)), which means they are **parallel**. **Checking for Coincidence:** - For the lines to be the same, their y-intercepts must also be equal. - The first line has a y-intercept of \(\frac{1}{4}\), while the second line has a y-intercept of \(-8\). - Since the y-intercepts are different, the lines are **distinct** and not the same line. **Option D: Intersection at (0, -8):** - Substitute \((0, -8)\) into both equations: - First Line: \(4(0) + 4(-8) = -32 \neq 1\) ❌ - Second Line: \(0 + (-8) = -8\) ✅ - The point \((0, -8)\) only lies on the second line, not on the first. **Conclusion:** The two lines are **parallel** but not the same. **Answer:** A. The lines are parallel.

Reviewed and approved by the UpStudy tutoring team

error msg
Explain
Simplify this solution

Bonus Knowledge

To determine the relationship between the lines, we can start by rewriting both equations in slope-intercept form (y = mx + b). For the first line, \(4x + 4y = 1\) simplifies to \(y = -x + \frac{1}{4}\), which has a slope of -1. For the second line, \(x + y = -8\) simplifies to \(y = -x - 8\), also with a slope of -1. Since they have the same slope, the two lines are parallel. Therefore, the correct statement is: A. The lines are parallel.

Related Questions

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy