anonymous
  • anonymous
What is the inverse function of y=3x-8.7
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Vocaloid
  • Vocaloid
"switch" y and x and solve for y so, if the original function is y = 3x - 8.7, you switch y and x to get x = 3y - 8.7 solve again for y
anonymous
  • anonymous
To find the inverse, switch the x and y. x = 3y-8 Solve for y. (x+8)/3 = y
anonymous
  • anonymous
thats the inverse

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anonymous
  • anonymous
Can u explain how u solve for y please
Vocaloid
  • Vocaloid
sure, so we have: x = 3y - 8.7 what do you get when you add 8.7 to both sides?
anonymous
  • anonymous
?
Vocaloid
  • Vocaloid
after you add 8.7 to both sides: x + 8.7 = 3y - 8.7 + 8.7 = 3y, are you with me so far?
Vocaloid
  • Vocaloid
all I did was add "+ 8.7" to both sides
anonymous
  • anonymous
Okay
Vocaloid
  • Vocaloid
now, divide both sides by 3
anonymous
  • anonymous
Okay
anonymous
  • anonymous
So its (x+8.7)/3=y
Vocaloid
  • Vocaloid
yup! great job!
anonymous
  • anonymous
Cool thanks

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