Idk if your teacher will mind if the y-axis and the x-axis were different (x goes by 1's, y goes by 45) I also forgot to put a line....
To find the slope, use the slope formula and plug in 2 points. I will use (3, 135) and (5,225):



m = 45
The slope is 45. This means that every minute, 45 words are something(typed/written/read - idk)