5
Yes.
3x + 2y =25 is an equation, and the function f(x)=y= -1.5x + 12.5. I don't know what you mean by sum since x and y could equal different numbers.
2y + x = 12At the x-intercept, y=0:x = 12At the y-intercept, x=0:2y = 12y = 6
-6x-2y = 8 -2y = 6x+8 y = -3x-4 Therefore the slope is -3 and the y intercept is -4
5
X + ( 2Y - 2X - Y ) is equal to Y - X
Yes.
If you mean: x-2y = 8 then it is y = 0.5x-4.
3x + 2y =25 is an equation, and the function f(x)=y= -1.5x + 12.5. I don't know what you mean by sum since x and y could equal different numbers.
2y + x = 12At the x-intercept, y=0:x = 12At the y-intercept, x=0:2y = 12y = 6
what is c, x + 2y, x+y equal to or greater than 8, x equal to or greater than 3, y equal to or greater than 0.
x = 2y y = x - 2 or x = 2y subtract 2y to both sides x - 2 = y subtract y and add 2 to both sides x - 2y = 0 multiply by -1 to both sides x - y = 2 -x + 2y = 0 x - y = 2 add these two equations together y = 2 substitute 2 for y into the first equation, x = 2y x = 2(2) = 4 Thus the solution of these linear system of equations is the point (4, 2). Check:
Put in function form. - 2X + 2Y = 4 2Y = 2X + 4 Y = X + 2 -------------set to 0 X + 2 = 0 X = -2 --------------X intercept
x would equal -1 and y would equal 1
Since there is no x in the equation, it can equal anything at all!
Solve for y: 2x+2y=8 2y=-2x+8 y=-x+4 f(x)=-x+4 I think that's what you mean.