Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?
2006-09-04 21:20:40 · 12 answers · asked by ttfn_2006 1 in Science & Mathematics ➔ Mathematics
just substitute the numbers to see if they fit x - y = 4 (meaning x must be 4 greater than y)
(0,-4) & (-3,-7) are the answers
2006-09-04 21:24:13 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Remember that all ordered pairs are in the form (x, y). Then, just substitute the x and y values in the pair for x and y in the equation, and simply subtract to see if it is a solution. (When you find a solution, you will get the result 4 = 4.)
Please retry these before checking the answers below.
(3, 1): 3 -1 = 2 (not a solution.)
(0, -4): 0 - (-4) = 4 (a solution.)
(-4, 0): -4 - 0 = -4 (not a solution.)
(-3, -7): -3 - (-7) = -3 + 7 = 4(a solution.)
So the solutions to that equation are (0, -4) and (-3, -7).
2006-09-05 04:27:30 · answer #2 · answered by Keiron 3 · 0⤊ 0⤋
the solutions for the equation is
(0,-4)
(-3,-7)
2006-09-05 04:32:44 · answer #3 · answered by sweetangel 2 · 0⤊ 0⤋
(0, -4)
0 - (-4) is the same as 0 + 4 which is 4
(-3, -7)
-3 - (-7) is the same as -3 + 7 which is 4
2006-09-05 04:26:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
just put all the variables in the equation
the solution are (0,-4) (-3,-7)
2006-09-05 05:59:29 · answer #5 · answered by Yo_@n 1 · 0⤊ 0⤋
Just substitute the value of x and y with the pairs
into the eqatuion, the one that proves correct is the answer.
Eg.
Substitute (0, -4) into x-y=4
0-(-4) = 4
+4 = 4
Therefore this is one of the answer.
Now you try the rest.
Cheers.
2006-09-05 05:30:29 · answer #6 · answered by isz_rossi 3 · 0⤊ 0⤋
(0,-4) (-3,-7)
2006-09-05 04:26:45 · answer #7 · answered by LORD Z 7 · 0⤊ 0⤋
(3,1), (-3,-7) and (0,-4)
Because...
3 - 1 = 4
-3 - (-7) -> -3 + 7 = 4
0- (-4) -> 0 + 4 = 4
2006-09-05 04:28:10 · answer #8 · answered by girlie [♥] 3 · 0⤊ 0⤋
(0,-4)
2006-09-05 04:28:29 · answer #9 · answered by jazzmen4u28 3 · 0⤊ 0⤋
looks like all answers here are right.
2006-09-05 04:28:46 · answer #10 · answered by john 6 · 0⤊ 0⤋