Using elimination method to find y
3x - 4y = -15 (multiply 4)
4x + 3y = 5 (multiply 3)
------------------------------------
12x - 16y = -60
12x + 9y = 15
--------------------- - (substract)
-25y = -75
y = 3
Using subtitution method to find x
3x - 4y = -15
3x - 4(3) = -15
3x - 12 = -15
3x = -3
x = -1
The solution (-1,3)
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The answer to this one is B. Good luck with life.
Answer:
9 and -21
Step-by-step explanation:
The constants are the numbers.
9 and -21
<span> The advantages of those forms are right in their name.
If you are trying to find the vertex of an equation, all you have to do is write down (h,k)
Standard form is good for using the quadratic formula, since it has a,b, and c
Factored form is good when trying to factor out an equation, eg (ax^2 + bx + c) and is used for writing down polynomials.
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