Question

Which of the following is a solution for the system y = -3x + 5 and y = 2x + 5?
Question 3 options:
(1, 7)
(5, 0)
(2, -1)
(0, 5)

Answer 1

i keep trying but I cant figure it out!

Answer 2

I get -6x=-15 +5

Answer 3

same concept as before, substitute each individual point (1,7) into both equations to see if it works.

Answer 4

ok

Answer 5

tell me ur answer afterwards, I will confirm it for u.

Answer 6

the first one isn't right... right.. i got -21 +5

Answer 7

no wait I lost!

Answer 8

give me a second.. working on it

Answer 9

kk.

Answer 10

Example using the point (1,7) and substituting into the first equation.
y=-3x +5
7=-3(1) + 5
7=-3 +5
7=2
That is clearly wrong, try the rest yourself.

Answer 11

ok

Answer 12

option two isn't correct because 0 doesnt = 5

Answer 13

yep, option two is wrong.

Answer 14

option 3 is wrong because -1 doesn't equal 9

Answer 15

try option 3 again.

Answer 16

u may have made a mistake plusing/minusing.

Answer 17

wait i confused ... option 4 worked for me.. For option three I got -1= 9

Answer 18

(2,-1)
y = -3x + 5 and y = 2x + 5?
-1= -3(2) + 5 -1 = 2(2) + 5
-1 = -6 + 5 -1 = 4 + 5
-1 = -1 -1 = 9
yes, u are right.

Answer 19

Option D is the answer.

Answer 20

ok YEAH! THANKS SO MUCH. .... I sorry... I am so bad at these... thanks so much! YOU get a medal!

Answer 21

haha it's ok, as long as u learnt how to do it :)

Answer 22

THanks!