Answer:
(D) 7/10
Explanation:
You want the rate of change of y with respect to x for the relation ...
(2/5)x -(4/7)y = 3/2
Slope-Intercept form
Solving for y, we have ...
2/5x -3/2 = 4/7y . . . . . . . . . . add 4/7y -3/2
(7/4)(2/5)x -(7/4)(3/2) = y . . . . multiply by 7/4
7/10x -21/8 = y . . . . . . . . . . simplify
The rate of change is the coefficient of x: 7/10.