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A pair of simultaneous eq;ns.
3x + y = 4
x + y = 0
Subtract the two eq'ns. This will eliminate 'y'
2x = 4
x = 2
Substitute this value of 'x' into either eq'n for 'y'
2 + y = 0
y = -2
or
3)2) + y = 4
6 + y = 4
y = 4 - 6
y = -2 ( again) .
So the answer is ( x,y) = ( 2, -2).
What else can I help you with?
X2 - 3x - 4 equals 0?
x2 - 3x - 4 = 0 so (x+1)(x-4) = 0, so x+1 = 0 and x-4 = 0, so x = -1 or 4
Which equals 3x2 - 10x - 8 when factored completely?
3x^(2)- 10x - 8 = 0 (3x + 2 )(x - 4 ) = 0 3x + 2 = 0 3x = -2 x = -2/3 & x - 4 = 0 x = 4
What is the x intercept of -5y plus 3x equals 12?
X intercept is the value of X when Y = 0 -5Y + 3X = 12 ley Y = 0 3x = 12 x = 4
How do you graph -3x-y equals 4?
Get in function form. - 3X - Y = 4 - 1(- Y = 3X + 4) Y = - 3X - 4 ----------------------------solve for X and Y by the 0 out method - 3X - 4 = 0 - 3X = 4 X = - 4/3 --------------- Y = - 3(0) - 4 Y = - 4 -------------- Draw a line linking those points.
What is the solution set of the equation x squared minus 3x minus 4 equals 0?
X2 - 3X - 4 = 0factored(X + 1)(X - 4)----------------X = - 1X = 4-------------------(- 1, 0) and (4, 0)================solution set of X interception points
What is x if 3x minus 2x plus 4 equals 0?
3x - 2x + 4 = 0 3x - 2x = -4 x = -4
The graph of 3x plus 4y-4 equals 0 crosses the line y equals -2 at what value of x?
3x + 4y - 4 = 0 y = -2 3x + 4(-2) - 4 = 0 3x - 8 - 4 = 0 3x = 12 x = 4 (4,-2)
X2 - 3x - 4 equals 0?
x2 - 3x - 4 = 0 so (x+1)(x-4) = 0, so x+1 = 0 and x-4 = 0, so x = -1 or 4
X equals -4-3y and -3x-4y equals 12?
x = - 4 and y = 0
Which equals 3x2 - 10x - 8 when factored completely?
3x^(2)- 10x - 8 = 0 (3x + 2 )(x - 4 ) = 0 3x + 2 = 0 3x = -2 x = -2/3 & x - 4 = 0 x = 4
3x plus y equals 4 x plus y equals 0?
x = y = 0 ?
How do you solve 3x squared plus 10x- 8 equals 0?
3x2 + 10x - 8 = 0 3x2 + 12x - 2x - 8 = 0 3x(x + 4) - 2(x + 4) = 0 (3x - 2)(x + 4) = 0 So 3x - 2 = 0 or x + 4 = 0 so x = 2/3 or x = -4
What is 3x-13x plus 4 equals 0?
3x-13x+4=0 -10x+4=0 4=10x 4/10=x simplified: x= 2/5
What are the solutions to the equation x2 plus 3x plus 3 equals 7?
x^2 + 3x + 3 = 7 x^2 + 3x - 4 = 0 (x - 1)(x + 4) = 0 x = 1 or x = -4
Which is the solution to the equation 3x-4 equals 5x-4?
x = 0
What are solutions to the equation x2-3x-4 equals 0?
They are x = -1 and x = 4.
Solve the quadratic equation using factoring 9x2 - 16 equals 0?
(3x+4)(3x-4)=0 x=±4/3
