The answer is: [B]: 0.40 km/min . _____________________________________________________ Explanation: __________________________________________________________ From the graph attached, which is "linear", we have 75 minutes (x-axis); corresponding to 30 km (y-axis); __________________________________________________________ We notice that all the answer choices are given in units of: ______________________________________________________ → "km/min" ; that is, "kilometers per minute" ; ______________________________________________________ → So, 30 km / 75 min = (30/75) km/ min = ? km / min ; ______________________________________________________ → (30/75) = (30÷15) / (75÷15) = ⅖ km/min ; or 0.4 km/min ; <span>______________________________________________________</span> → or; use calculator: (30/75) = (30÷75) = 0.4 km/min ; ______________________________________________________ → which corresponds to: ______________________________________________________ → Answer choice: [B]: <span>0.40 km/min . </span>__________________________________________________________
