Which of the ordered pairs (3, 1), (0, –4), (–4, 0), (–3, –7)are solutions for the equation x – y = 4?
A) (-4,0) and (-3,-7)
B) (3,1) and (-4,0)
C) (0,-4),(-4,0) and (-3,-7)
D) (0,-4) and (-3,-7)
2007-02-09 04:44:06 · 9 answers · asked by zarkken69 1 in Science & Mathematics ➔ Mathematics
*You have to replace each set of points with the corresponding variables.
a. (3,1)
x - y = 4
3 - 1 = 4
2 = 4
False
b. (0,- 4)
x - y = 4
0 - (- 4) = 4
0 + 4 = 4
True
c. (- 4,0)
x - y = 4
- 4 - 0 = 4
- 4 = 4
False
d. (-3,-7)
x - y = 4
- 3 - (-7) = 4
- 3 + 7 = 4
4 = 4
True
*The solutions are: (0, - 4) & (-3, -7).
2007-02-09 04:54:13 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
D. This is because if you minus a minus you get a plus.
So you get 0 - (-4)=0+4=4 and -3-(-7)= -3+7=4
2007-02-09 05:35:00 · answer #2 · answered by maidmaz 3 · 0⤊ 0⤋
d is correct
you have to substitute the numbers is the equation.
for d) we have
0 - (-4) = 0 + 4 = 4 (true)
-3 - (-7) = -3 + 7 = 4 (true)
hope this helps you
2007-02-09 04:51:36 · answer #3 · answered by ilovephotographyandmusic 4 · 0⤊ 0⤋
The solution for the equation x - y = 4
is D). (0, 4)(- 3, - 7)
- - - - - - - - - - -s-
2007-02-09 06:32:29 · answer #4 · answered by SAMUEL D 7 · 0⤊ 0⤋
D
0-(-4) =4
-3-(-7)=4
2007-02-09 05:01:34 · answer #5 · answered by ironduke8159 7 · 0⤊ 0⤋
D. You just sub in the ordered pairs into the equation until you get true sentences.
2007-02-09 04:53:44 · answer #6 · answered by lizzie 3 · 0⤊ 1⤋
D ofcourse. Just put the values whats so difficult about it?
2007-02-09 05:01:18 · answer #7 · answered by Mastang 2 · 0⤊ 0⤋
d
2007-02-09 04:52:13 · answer #8 · answered by ChIkaBuEnA 2 · 0⤊ 1⤋
D)
2007-02-09 04:48:05 · answer #9 · answered by answer 2 · 0⤊ 1⤋