The equation 2x-5y=-1 has a graph that is a line. Every point on that line is an ordered pair that is a solution to the equation. So pick any real number x and plug it in. You will find a y and that pair (x,y) is an ordered pair that is a solution to this equation. For example, let x=0 Then we have -5y=-1so y=1/5 The ordered pair (0, 1/5) is a point on the line and a solution to the equation.
y=(-1) x=(2)
It works out that x = 6 and y = 3 or as (6, 3)
Although no incomplete ordered pairs have been shown they can be readily solved.If x + y - 1 = 0, then x = 1 - y, also y = 1 - x.From the above formulae for x and y then any omissions can be completed.EXAMPLE : complete the ordered pairs (1) (7, y) and (2) (x, -4)(1) y = 1 - x = 1 - 7 = -6 : The ordered pair is thus (7, -6)(2) x = 1 - y = 1 -(-4) = 5 : The ordered pair is thus (5, -4)
ordered pair
There is no ordered pair for y =4. y=4 is a line, not a point.
The ordered pair is (1, 3).
y = 3x =3(6) = 18 ... the ordered pair is (x,y) = (6,18)
(0, 6)
5x=4y=-20 x=-4 y=-5 (-4,-5) is the ordered pair
(1,-2)
13
x = -6 y = -11
The ordered pair is (3, 2).
The ordered pair is (2, 3).
x = 6 So y = 9*6 + 4 = 54 + 4 = 58 The ordered pair is (6, 58)
The ordered pair is (-1, -7).