Question

solve by substitution method.
4x+9y=-5
x=1-3y

Answer 1

in the top equation, fill in 1-3y for x, which gives \[4\times \left( 1-3y \right)+9y =- 5\]

Answer 2

gives 4 - 3y = -5, so y =3

Answer 3

then fill is 3 for y in the lower equation

Answer 4

which gives \[x = 1-3\times3=-8\]

Answer 5

it says i need an ordered pair so it would be y=3 and what does x=?

Answer 6

you take the lower equation: x=1-3y, and substitue y with the number you got from the top equation (y=3)

Answer 7

ok thanks