8x+5y=24
y=−4x
what is X and Y??
2 answers:
Answer:
Step-by-step explanation:
plug y into the first equation:
8x+5y=24
8x+5(-4x)=24
8x-20x=24
-12x=24
x=-24/12
x=-2
then plug x to the second equation
y=-4
y=-4(-2)
y=8
x=-2
y=8
8x + 5y = 24
You just told us that Y = -4x .
If that's true, then
8x + 5(-4x) = 24
8x - 20x = 24
-12x = 24
<em>x = -2</em>
<em></em>
y = -4x
y = -4(-2)
<em>y = 8</em>
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