Ministerrbmfm Ministerrbmfm

13-08-2022
Mathematics

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Ifx=4y+3andy=–2x–3 what is the value of xy?

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seokjinnie777 seokjinnie777

13-08-2022

Answer:

1

Step-by-step explanation:

x = 4y + 3

y = -2x - 3

(I'm going to substitute the value of x into the 2nd equation)

y = -2(4y + 3) - 3 = -8y - 6 - 3 = -8y - 9

9y = -9, y = -1

x = 4(-1) + 3 = -4 + 3 = -1

xy = (-1) * (-1) = 1

hope this helps! <3

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