3x-2y=6 -2y=-3x+6 y=1.5x-3
3x + 2y = 7
3x-2y = 5 -2y = -3x+5 y = 1.5x-2.5 in slope intercept form
y=16 x= -4
(2, -1)
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
2y-3x=4
3x-2y=6 -2y=-3x+6 y=1.5x-3
-3x + 2y = 9 2y = 3x + 9y = 1,5x + 4,5
You cannot solve one linear equation in two unknown variables.
3x + 2y = 7
3x-2y = 5 -2y = -3x+5 y = 1.5x-2.5 in slope intercept form
y=16 x= -4
(2, -1)
4x-y=2, thereforey=4x-2sub y into 3x+2y=6...3x+8x-4=611x=10x=10/11
Standard form is: y = Mx + b so you must solve for y 3x = 2y + 7 3x - 7 = 2y 2y = 3x - 7 y = ( 3 / 2 )x - ( 7 / 2 )
x+2y-6=z -z -z x+2y-z-6=0 +6 +6 ---------> x+2y-z=6 3y-2z=7 ---------> 0x+3y-2z=7 4+3x=2y-5z -3x -3x ---------> -3x+2y-5z=4 Put them into a matrix, for x,y,z and their answers. Solve for [A]-1[B], and the answer comes to: x= 1.75, y= 1.5, and z= -1.25