We have been working on these types of situations for almost a week now and I have only done increasing situations (3 different ones). Today I give them this one and it's like they have never seen or done something like this before. They don't see the connection between our increasing situations and this decreasing situation. They can chant the formulas for slope-intercept form and point out every slope and y-intercept however they don't see the relationship between the two types of situations. It blows my mind everytime!! Time to start firing up those synapses!!!