Question

1. Tell whether the system has one solution infinitely many solutions or no solution.

9x+8y=15
9x+8y=30

a. one solution
b. infinitely many solutions***
c. no solution

2. Tell whether the system has one solution infinitely many solutions or no solution.

5x-3y=10
10x+6y=20

a. one solution***
b. infinitely many solutions
c. no solution

3. Tell whether the system has one solution infinitely many solutions or no solution.

2x-5y=17
6x-15y=51

a. one solution
b. infinitely many solutions
c. no solution***

Answer 1

#1. two distinct parallel lines, so no solution

#2, correct

#3. If you multiply the first by 3, you get the 2nd.
So the two equations are really one and the same, thus :
infinite number of solutions.

Answer 2

If you use the elimination method and add the two equations together, if the variables are eliminated and you have a false statement like 0 = 15 then there is no solution.

If you have a true statement like 0 =0 then there are many solutions. To check your work, you could also graph the equations.

Parallel lines will never intersect so there are no solutions.

Lines that are actually the same and just written differently will be the same line when you graph it. You will have an infinite number of solutions.

Based on this, I don't agree with your answers.

Answer 3

Thanks Reiny!
Thanks John!

You guys really helped me in this one :)

Answer 4

You suck u got me an 80 because you wrong don’t post if u wrong

Answer 5

Don't comment if you're a butt and stupid to not look at the comments^

Answer 6

ushgre2yjukw3r56

Answer 7

1 ;; no solution ( c )

2 ;; one solution ( a )

3 ;; infinite solutions ( b )

Answer 8

thx Tohru, you were right

Answer 9

I love how "Yall Suck" is blaming us for his inability to do math so when he comes here and gets it wrong, its our fault. Lol what a dope.

Answer 10

d
c
d
a
c
d
b
c
a
b

Answer 11

^ solving systems using elimination
@900valll

Answer 12

Unit 7: Lesson 3 Practice Algebra 1 A
1. D) (4,5)
2. C) (6,3)
3. D) (3,1)
4. A) (3,4)
5. C) (4,7)
6. D) 660 Calories, 580 Calories
7. B) Parasailing: $51; Horseback riding: $30
8. C) No solution
9. A) One solution
10. B) Infinitely many solutions

10/10 (100%)

- Seeker

Answer 13

How many solutions does this equation have?

–9 − 4s = –4s − 9
no solution
imfetily many solutions
one solution