Question

toni is testing her new model airplane. she starts its descent at an elevation of 1,200 feet. it descends at a constant rate of 200 feet per minute. what is the slope of this line? in other words, how many feet does the planes elevation decrease per minute? the slope is \boxed{}

Explanation:

Step1: Identify slope definition

Slope = $\frac{\text{Change in elevation}}{\text{Change in time}}$

Step2: Select two points

Use (0, 1200) and (1, 1000)

Step3: Calculate change in elevation

$1000 - 1200 = -200$

Step4: Calculate change in time

$1 - 0 = 1$

Step5: Compute slope

$\text{Slope} = \frac{-200}{1} = -200$

Answer:

-200