10 because 4*4-3*2 is 16-6 which is 10
4x+3y = 6 3y = -4x+6 y = -4/3x+2 in slope intercept form
x = 5 y = 2 4x - 3y = ? 4(5) - 3(2) = ? 20 - 6 = 14
4x+3y = 12 3y = -4x+12 y = -4/3x+4
You need to organise your question properly. 3x+2y=4 4x + 3y= 7? Is 4 4x = 44x or 4-4x or 4+4x How can there be 2 equal signs in 1 equation?
4(2) - 3(1) = 5
4x + 3y = 6y 4x = 3y 4/3 x = y The slope is 4/3 and the y intercept is 0.
4x - 3y = 12-3y = -4x + 12y = (4/3)x - 4^plug this transformed version of the equation into your graphing calculator or do it out by hand.
7
6x - 3y = 304x = 2 - y4x = 2 - yy = 2 - 4x (substitute 2 - 4x for y into the first equation)6x - 3y = 306x - 3(2 - 4x) = 306x - 6 + 12x = 3018x = 36x = 2y = 2 - 4x (substitute 2 for x)y = 2 - 4(2) = 2 - 8 = -6So the solution is x = 2, and y = -6.x + y = 2 + -6 = -4Thus, it is true that x + y = -4.
2X - 3Y = -2 4X + Y = 24 -2(2X - 3Y = - 2) 4X + Y = 24 - 4X + 6Y = 4 4X + Y = 24 ------------------+ 7Y = 28 Y = 4 ------- insert back into one of the equations ( 4X + Y = 24 will do ) 4X +(4) = 24 4X = 20 X =5 -------- check 2(5) - 3(4) = -2 10 - 12 = -2 -2 = -2 checks I can see by inspection that the other equation checks also
4x = -3y+8 3y = -4x+8 y = -4/3x+8/3 So the slope is -4/3 or -1 and a 1/3
If: -4x+3y = 1 Then: 3y = 4x+1 And: y = 4/3x+1/3 which is now in slope-intercept form