Helpful words and phrases to describe graphs: VERBS UP DOWN NO CHANGE AT THE BOTTOM AT THE TOP bounce back climb go up take off shoot up soar jump increase rally recover rise grow rocket improve collapse come down crash go down come down fall fall off drop slump decline decrease plummet plunge slide slip shrink flatten out fluctuate level off hold remain stable stay at the same level remain constant stagnate steady stabilize reach a low point bottom out recover reach a peak peak top out NOUNS UP DOWN an increase a rise a growth an improvement an upturn a surge an upsurge an upward trend a fall a decrease a decline a drop a downturn a downturn trend DEGREES OF CHANGE Adjectives Adverbs dramatic, dramatically, considerable, considerably, sharp, sharply, significant, significantly, substantial, substantially, moderate, moderately, slight, slightly SPEED OF CHANGE abrupt sudden rapid quick steady gradual slow Many relationships are, not linear. Each unit change in the x variable will not always bring about the same change in the y variable. The graph of this relationship will be a curve instead of a straight line. This graph below shows a linear relationship between x and y. This graph below shows a nonlinear relationship between x and y. directly proportional A relationship where a number increases or decreases together with another number at the same ratio. Directly proportional is the opposite of inversely proportional. 25 20 15 10 5 0 270 275 280 285 290 295 300 inversely proportional A relationship where a number either increases as another decreases or decreases as another increases. Inversely proportional is the opposite of directly proportional. 110 100 90 80 70 60 50 40 40 50 60 70 80 90 100 110