Which of the ordered pairs
(0, 0), (–2, 10), (–1, –5), (–3, 9)
are solutions for the equation y = 5x?
2007-02-22 13:53:26 · 4 answers · asked by Michelle P 1 in Science & Mathematics ➔ Mathematics
the 1st #'s are X's and the 2nd #'s are Y's
substitute:
0=5x0
0=0 that works!
10= -2x5
10=-10 nope!
-5=5 x -1
-5= -5 that works!
9=5x-3
9=-15 nope!
both (0,0) and (-1,-5) are right.
2007-02-22 14:00:02 · answer #1 · answered by Ari 6 · 0⤊ 0⤋
Plug in the the first number in the ordered pair into x, and second number to the right.
10 = 5(-2)
10 does NOT equal -10.
-5 = 5(-1)
-5 = -5
So (-1,-5) IS a solution.
0 = 5(0)
0 = 0
So (0,0) is also a solution.
9 = 5(-3)
9 does NOT equal -15.
So the solutions are: (-1,-5) and (0,0)
Simple.
2007-02-22 22:03:26 · answer #2 · answered by Genius 4 · 1⤊ 0⤋
plug x of the ordered pair in the x value for the equations and y in the y value
(-1,-5)
-5=5(-1)
2007-02-22 21:57:31 · answer #3 · answered by jayphelps321 2 · 0⤊ 0⤋
(0,0) and (-1,-5).
If you substitute,
0=5(0)
0=0 which means both sides are equal.
-5=5(-1)
-5=-5, which means both sides are equal.
2007-02-22 22:02:14 · answer #4 · answered by toro_rulez80 2 · 0⤊ 0⤋