Question

Solve the following system:

y = x + 3
4x + y = 18

(7, 4)

(-4, 7)

(4, 7)

(4, -7)

Answer 1

Start with the second equation 4x + y = 18 and plug in y = x+3


4x + y = 18

4x + x+3 = 18 ... replace y with x+3, solve for x

5x+3 = 18

...
...
...

x = ???

Answer 2

3

Answer 3

Then plug that into y = x+3

Answer 4

y = x+3

y = 3+3 ... plug in x = 3 (ie replace x with 3)

y = 6

Answer 5

y=6?

Answer 6

correct

Answer 7

oh ok Thank You!

Answer 8

So the solution is the ordered pair (3,6)

Answer 9

but thts not one of the options...

Answer 10

and there's a typo here since that's not a choice

but I'm not surprised since I see this sort of thing a lot with online problems

Answer 11

maybe u add 1 to each?

Answer 12

double check to make sure all the numbers have been copied correctly

Answer 13

ok hold on

Answer 14

yea its copied correctly :/

Answer 15

http://prntscr.com/3yt0e3

Answer 16

then it's a typo on their part (your teacher or whoever wrote this problem)

Answer 17

and there's not much you can do other than contact the teacher about it

Answer 18

ok thank you ill do tht

Answer 19

Thx Again!

Answer 20

you're welcome

Answer 21

ugh my teachers on vacation for the 4th of july until Sunday -_-

Answer 22

no fair..you don't get the luxury of vacation

Answer 23

oh well, hopefully you can still reach him/her on time to address the issue

Answer 24

lol ill just put the one tht add 1 to each and if it marks it wrong ill call her later

Answer 25

Thanks again for all your help @jim_thompson5910 i appreciate it :)

Answer 26

ok I guess that works out and you're welcome