TMobile LTE 68 D 624 PM imathasrationalreasoningnet In the

T-Mobile LTE * 68% @D. + 6:24 PM imathas.rationalreasoning.net In the graphs below, the r axis has the same scale as the y axis. Use these graphs to answer the following questions. For all parts of this question enter your answer as a decimal approximation For example, enter 0.5 instead of 1/2. Similarly, enter Ay = 0.5 instead ofy =- ) Ay a. Consider linear relationship A (the graph on the left) i. Estimate the constant rate of change of y with respect to r Preview ii. Write a formula to express Ay in terms of . (Use \"d\" to enter . For example, type dx+5 forAx +5) Preview b. Consider linear relationship B (the graph on the right) i. Estimate the constant rate of change of y with respect to x.

Solution

(a) the graph is increasing

It has positive slope and dy=dx

(i) rate of change = dy/dx = 1

(ii) formula : dy=dx

(b) it has negative slope and dy=2dx

(i) rate of change = -dy/dx = -2dx/dx = -2

(ii) formula: dy = -2dx