help me!!! its about math........^_^?

When the question asks, "is such and such a solution" such as the one you've asked about. Just sub the points in and if it works out, then it is a solution. If it doesn't, then it isn't a solution. So:

(-3 x -4) + (4 x 3) = 0
12 + 12 = 0
24 = 0 IS FALSE

So therefore, this is not a solution.

No. It does not. The ordered pair (-4,3) means that x=-4 and y=3. So, if you multiply -4 by -3 you get 12. If you multiply 4 by 3 you get 12. 12+12 is 24 and that does not equal 0. If the ordered pair was (4,3), that would work. It would be -12+12=0, which is correct.

-3x + 4y = 0
-3(-4) + 4(3) = 0
12 + 12 = 0
24 = 0

∴ (-4 , 3) is not a solution of -3x + 4y = 0

all you have to do is to try -4 in the case of x and 3 in the case of y.
-3*(-4)+4*3=12+12=24 that is not equal to zero so it's not a solution

(- 3 )(- 4) + (4) (3)
12 + 12
24
Does not = 0 thus (-4,3) is NOT a solution.

-3x + 4y = 0

Substitute the values.

-3(-4) + 4(3) = 0
12 + 12 = 0
24 = 0

Since 24 IS NOT EQUAL TO 0, this is a false equation.

An ordered pair always puts x first and y second. So, the ordered pair is (x,y).

In your case:

x = -4
y = 3

Plug those values into the equation to see if the ordered pair is a solution:

(-3) * (-4) + (4) * (3) = 24

This ordered pair obviously doesn't work in the equation because the left side of the equation was equal to zero, not 24.

you just need to substitute -4 in x and 3 in y. if the answer is 0 then its a solution
in this case its 12 + 12 which is not equal to 0. then its not a solution. if you graph this. this point (-4,3) is not on the line of the graph

-3x + 4y = 0

Check (-4,3) => x = -4; y = 3:

-3(-4) + 4(3) = 0
12 + 12 = 0
24 = 0 => FALSE

The ordered pair (-4,3) is not the solution because it doesn't satisfy the given equation.

Bye
gilvi