My advanced students are quick with this concept and remember it well from last year. All that we need to do is review with some ISN inserts. I LOVE the HOYVUX inserts I found via Sarah Hagan at Math=Love.
Since this is pretty quick I finish up class by giving them an investigation to get ready to talk more formally about linear functions. We buy this great red graph paper from GEYER and I give them a sheet for this investigation. It comes in 6 per side (front & back) or 3 per side (front & back). disclaimer: I do not profit from mentioning this paper, I've been using it for years and it's really wonderful. Being printed in red ink allows the student work to show up easily.
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