(-1,-2)
x = 8, y = -1
7x+3y where x=2 and y=9 can be written as (7*2)+(3*9) which can be simplified to (14)+(27), from there it's basic addition.
x + y = -2 2x + 3y = -9 You solve this by elimination - multiply both sides of first equation by 3, then subtract, solve for x, then substitute in any of the equations to solve for y 3x + 3y = -6 2x + 3y = -9 subtracting, x = 3 substituting into 1st equation, y = -2-3 = -5
x-3y+9=0 So x+9=3y So x/3+3=y That means y= x/3+3 Of course you still don't know what y is, except in terms of x.
4x + 3y=9 x=0 y=3
(-1,-2)
x = 8, y = -1
5x+3y
7x+3y where x=2 and y=9 can be written as (7*2)+(3*9) which can be simplified to (14)+(27), from there it's basic addition.
4.34684352143
x = 2.15 and y = 3.75
x + y = -2 2x + 3y = -9 You solve this by elimination - multiply both sides of first equation by 3, then subtract, solve for x, then substitute in any of the equations to solve for y 3x + 3y = -6 2x + 3y = -9 subtracting, x = 3 substituting into 1st equation, y = -2-3 = -5
x-3y+9=0 So x+9=3y So x/3+3=y That means y= x/3+3 Of course you still don't know what y is, except in terms of x.
The solution of 4x plus 3y -9 and x -3 is; 5x+3y-3.
x+3y=2 x= -5 y = 1
The ordered pair is (-1, -2).