# Algebra

40. The graph of the following system yields perpendicular lines.

x + 2y = -10
-4y = 2x + 20

(True?)

47. The graph of the following system yields parallel lines.

2y = -10 + x
-4y = 2x + 20

(True)

48. The graph of the following system yields parallel lines.

x - 2y = 1
y = -3x + 10

(False)

Are these correct?

Thanks
-MC

1. 👍 0
2. 👎 0
3. 👁 56
1. 47.
2y = -10 + x ----> y = (1/2)x - 5
-4y = 2x + 20 ---> y = (-1/2)x - 5
one slope is 1/2 then other is -1/2, so NOT parallel

your best way is to rewrite in the form
y = mx + b like I did above.

Why are you unsure about the first one ?

1. 👍 0
2. 👎 0
posted by Reiny
2. Thanks; are the other 2 correct?

-MC

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Algebra

40. The graph of the following system yields perpendicular lines. x + 2y = -10 -4y = 2x + 20 (True) 48. The graph of the following system yields parallel lines. x - 2y = 1 y = -3x + 10 (False) Thanks -MC

asked by mysterychicken on May 10, 2011
2. ### MATH

Post your 50 or more word response to the following in the assignment link: How can you determine if two lines are perpendicular? Your response should include the following: · How the slopes of two perpendicular lines relate; ·

asked by Anonymous on October 11, 2010
3. ### Algebra

Need help with these-- 40. The graph of the following system yields perpendicular lines: x + 2y = -10 -4y = 2x + 20 True or False? 42. If we multiply a 2 x 2 matrix with a 2 x 1 matrix, the product is a 2 x 1 matrix. -False?

asked by mysterychicken on May 6, 2011
4. ### geometry

Martin drew a pair of perpendicular lines and a pair of parallel lines. Which of these statements best compares the pairs of perpendicular and parallel lines? Answer A: Perpendicular and parallel lines always have a common

asked by Sam on September 25, 2011
5. ### MATH

How can you determine if two lines are perpendicular? · How the slopes of two perpendicular lines relate; · How you recognize if two lines are perpendicular on a graph; · How you recognize if two lines are perpendicular simply

asked by Anonymous on October 11, 2010
6. ### math

What will the graph look like for a system of equations that has no solutions? A. The lines will be perpendicular. B. The lines cross at one point. C. Both equations will form the same line. D. The lines will be parallel. Is the

asked by Claire on April 30, 2015
7. ### Algebra

6. y = 2x - 1 and y = x + 3 ***A. (4,7) B. (7, 4) C. (-7, -4) D. infinite solutions 7. y = 4x and y + x = 5 A. (-4, 1) B. (1, 4) C. (-3, 2) ***D. (2,3) 8. What will the graph look like for a system of equations that has no

asked by Leet Speaker on March 1, 2016
8. ### Math

What will the graph look like for a system of equations that has no solution? A. The lines will be perpendicular. B. The lines will cross at one point. C. Both equations will form the same line. D. The lines will be parallel. I

asked by Cassie on April 9, 2013
9. ### Algebra 2

Is it me or does this problem not make sense? (you can't solve it) 5. Solve for x in the following system: 6x + 6y = -2 y = -x I also need help in these: 38. We can take the product AB only if the number of columns of A equals the

asked by mysterychicken on May 1, 2011
10. ### math

19. Which statement describes the relationship between the line graphs of the equations below? y=-2x+4 y=0.5x+4 A.The line graph are the same line. B.The line graph are parallel lines. C.The line graph are perpendicular lines.

asked by vincent on August 14, 2014

More Similar Questions