Question

1. Use the slope to find the speed of the object in the graph below.252015-distance (miles)105-150(1.39, 11.6)23time (hour)

Answer 1

Notice that the slope of the line is equal to the speed

`\text{Slope (speed) = }(y_2-y_1)/(x_2-x_1)\text{ = }\frac{20\text{ -10}}{4\text{ - 2}}\text{ =}(10)/(2)=5\text{miles / hour}`

hence, the speed = 5 miles / hour