Question

solve the system by substitution 2x+y=-11, 3x-4y=11
a. (3,5)
b. (-5,-3)
c. (-3,-5)
d. (5,3)

Answer 1

isolate y in the first equation

Answer 2

u get y = -2x-11, which u then substitute into the second equation

Answer 3

the derived second equation: 3x - 4(-2x-11) = 11, do ur algebra, solve for x then plug it back in any of the two equation to get the y value, after that ur all done

Answer 4

is it 15 so would it be d @11calcBC

Answer 5

wuts ur x value? from my equation

Answer 6

15?

Answer 7

3x - 4(-2x-11) = 11, after distributing u get 3x + 8x + 44 = 11, simplify, 11x = -33, wuts x?

Answer 8

-3

Answer 9

yes there we go

Answer 10

u understand now?

Answer 11

yep so its would be c?

Answer 12

yes

Answer 13

thanks