2007-06-16 08:00:39 · 10 answers · asked by tony f 1 in Science & Mathematics ➔ Mathematics
8x - 2y=12
y=4x-5
=>
8x -2(4x-5) =12
8x - 8x +10 = 12
=> 10 = 12 !
so this equation has no answer
have fun ;)
2007-06-16 08:05:08 · answer #1 · answered by Farshad Gh 2 · 0⤊ 0⤋
8x-2y=12 y=4x-5
Note that both lines have a slope of 4 but have different y - intercepts. The lines are distinct but parallel.
Therefore there are no solutions to this system.
2007-06-16 11:29:26 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
8x -2y =12
y = 4x -5
By substitution:
y = 4x -5 => 8x -2(4x -5) =12
8x -8x + 10 = 12
10 = 12 (impossible)
Answer : No solution
2007-06-16 08:14:57 · answer #3 · answered by frank 7 · 0⤊ 0⤋
8x-2y=12
y=4x-5
8x-2*(4x-5)=12 ==> 8x-8x+10=12 ==> 10=12 FALSE
2007-06-16 08:07:29 · answer #4 · answered by tigerhawkro 2 · 0⤊ 0⤋
By substitution:
8x-2(4x-5)=12
8x-8x-10=12
-10 can not equal 12, your problem is screwed up.
By Addition:
2(y)=2(4x-5), so 2y=8x-10, so -8x+2y=-10
8x-2y=12
-8x+2y=-10
0x+0y =2
0 can not equal 2, so again, re-read the problem.
email me at cu_softball_29@yahoo.com if you need more help
2007-06-16 08:08:35 · answer #5 · answered by Anonymous · 0⤊ 1⤋
8x-2y=12
y=4x-5
substituting y in 1st equation
2007-06-16 08:03:10 · answer #6 · answered by sweet n simple 5 · 0⤊ 1⤋
a million. upload this 2 2(3)a + 3(3)b = -a million(3), -{3(2)a + 5(2)b} = -(-2(2)) it particularly is 6a+9b=-3, -6a-10b=4 you will get b=-a million, puttin in any between the eqn 6a-9=-3 or a=a million ans: (a million,-a million) 2. x + y = 10, x - y = 8 alongside with the two 2x=18, x=9 you do not could desire to pass extra anymore.. ans: (9,a million) 3. 3x - y = 9, 2x + y = 6 or 5x=15 or x=3(with the aid of potential of alongside with) putting x=3 we get 6+y=6, y=0 ans:(3,0) 4. x + y = -7, 3x + y = -9 subtracting 1st eq. from 2nd we get 2x=-2, or x=-a million now y=-7-(-a million)=-6 ans: (-a million,-6) 5. x + 3y = 19, x - y = -a million subtracting 2nd eq. from 1st we get 4y=20, y=5 so x=-a million+5=4 ans:(4,5)
2016-11-25 01:05:05 · answer #7 · answered by ? 4 · 0⤊ 0⤋
Rewrite the second equation as
4x -y = 5
and
the first as 4x-y = 6.
Subtracting, gives
0 = -1,
so the equations are inconsistent.
There is no solution.
2007-06-16 08:26:16 · answer #8 · answered by steiner1745 7 · 0⤊ 0⤋
8x-2y=12
y=4x-5
8x-2(4x-5)=12
8x-8x+10=12
12-10
=2
2007-06-16 09:04:33 · answer #9 · answered by neophyte 2 · 0⤊ 1⤋
The lines are parallel, they have no answer b/c the two lines have the exact same slope. Just say "same slope, so they never touch, never giving an answer."
2007-06-16 08:11:31 · answer #10 · answered by notlifebutmagnificent 2 · 0⤊ 0⤋