anonymous
  • anonymous
-y - 2 = x + 1 is a decreasing function
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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raffle_snaffle
  • raffle_snaffle
make it a function of y respect to x
abb0t
  • abb0t
Yes. If you put it in the form: \(\sf \color{red}{y=mx+b}\) You will see
anonymous
  • anonymous
ok so it is increasing y=-2x+1

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raffle_snaffle
  • raffle_snaffle
what makes you say it's increasing?
anonymous
  • anonymous
sorry decreasing
abb0t
  • abb0t
Yes.
raffle_snaffle
  • raffle_snaffle
okay right!
anonymous
  • anonymous
god help us it is not your fault, but \[-y - 2 = x + 1\] is not a function at all it is an equation
abb0t
  • abb0t
It's a linear function, no?
anonymous
  • anonymous
I have it in my homework it says if it is increasing or decreasing
anonymous
  • anonymous
yes
anonymous
  • anonymous
no it is not a linear "function" it is an equation for a line thus beginning the long confusion between the concept of "function" and "equation" it is not your fault just bad math teachers
anonymous
  • anonymous
aaaa
anonymous
  • anonymous
anyway what they want you to do is solve for \(y\) \[-y - 2 = x + 1\] \[-y=x+3\] \[y=-x-3\]
anonymous
  • anonymous
but is it increasing or decreasing
anonymous
  • anonymous
and then say "since the slope is negative, it is decreasing
anonymous
  • anonymous
\[y=-x-3\\y=mx+b\] \[m=-1\] so it is decreasing
anonymous
  • anonymous
ok thank you. was not sure
anonymous
  • anonymous
yw sorry you have such a crappy book
anonymous
  • anonymous
y = -5x + 4 so this one is increasing right
anonymous
  • anonymous
i meant decreasing sorry didnt see the -
anonymous
  • anonymous
yeah, decreasing
anonymous
  • anonymous
k thanks

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