Use the Substitution Method to solve the following system of equations.
4x + y = 11
x + 2y = 8

(3, 2)

(2, 3)

(-2, -3)

(-2, 3)

Question

Use the Substitution Method to solve the following system of equations.
4x + y = 11
x + 2y = 8

 (3, 2)

 (2, 3)

 (-2, -3)

 (-2, 3)

anonymous · Answer

well uh, 4x+y = 11 so y = 11-4x.

use y = 11 - 4x in x+2y = 8

x + 2(11-4x) = 8.

Solve accordingly for x, y

jim_thompson5910 · Answer

solve the first equation for y

4x + y = 11

y = -4x + 11

----------------

then plug this into the second equation

x + 2y = 8

x + 2(-4x + 11) = 8

x - 8x + 22 = 8

I'll let you finish up