x = 2.15 and y = 3.75
4x+3y = 6 3y = -4x+6 y = -4/3x+2 in slope intercept form
(3x+2y)*(5x-3y) =3x*5x + 3x*(-3y) + 2y*5x + 2y*(-3y) [This is sometimes called the FOIL method - You multiply the First members of each bracket, then the Outers, Inners, Lasts] = 15x2 - 9xy + 10xy - 6y2 = 15x2 + xy - 6y2
3x 3y + 6z = 12
5x+3y
2x + 3y = 17 3x + 4y = 24 (2x + 3x) + (3y + 4y) = (17 + 24) 5x + 7y = 41
The slope is -1. 3x+3y=12 Subtract 3x 3y=-3x+12 Divide by 3 y=-x+4
No.
Multiply first equation by 1.5, giving 3x + 3y = 12, but we are told that 3x + 3y = 6. If there isn't an error in the question then 2 = 1!
x = 2.15 and y = 3.75
2x+3y=13 3x-y=3 x=2
70000000y=35t
(5, 1)
(-1, 0)
(4, 5)
y=-2/3x
(2, 2)