shoe size problem cevera tucker

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  • Class! For homework tonight, I want you to solve this question. (The size of a shoe a person needs varies linearly with the length of his or her foot. The smallest adult shoe size is Size 5, and fits a 9-inch long foot. An 11-inch long foot takes a Size 11 shoe.) Good luck!
  • Hey Camryn! yeah sure i'll help you!
  • Hey Grace! Mr. Neild gave us homework and I don't understand it can you help me?
  • Okay for this question we are finding an linear equation. So first we find the the x and y values which is x= size of shoe and y= size of foot. Now we need to find slope (m), which (5,9) (11,11) 11-9/11-5=1/3 m=1/3. Now we need to find (b) which you take 9=1/3(5)+b, then 9=5/3+b, next we divide 9/-5/3 and 5/3/ 5/3 b=7.3 then we plug in the m and b values in y=mx+b. Well don't expect me to do everything! Do it yourself.
  • Okay! I got it thanks!
  • okay! Class does anyone figure out an answer for the problem I issued you yesterday?
  • Yes, Mr. Neild I have an answer! The answer that I got is y= 1/3x+7.3
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