jazziefae jazziefae
  • 02-09-2018
  • Mathematics
contestada

What is the x value with that y =15 -3x and y =0?

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jdoe0001 jdoe0001
  • 02-09-2018

[tex] \bf y=15-3x~\hspace{5em} \stackrel{y=0}{0=15-3x}\implies 3x=15\implies x=\cfrac{15}{3}\implies x = 5 [/tex]

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lilykern82
lilykern82 lilykern82
  • 02-09-2018
The answer is 5, since y=0 you need the other side to equal 0 as well. So substituting 5 for x looks like this 0=15-3(5), 0=15-15, 0=0
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