Question

Determine the rate of change for each question.
26. 20x + 85y = 120​

Answer 1

-4/17

Explanation:

The slope of a line refers to the rate of change. First, put the equation into y-intercept form to clearly identify the slope.

`20x+85y=120\\\\20x+85y-20x=120-20x\\\\85y=-20x+120\\\\(85y)/(85)=(-20x+120)/(85)\\\\y=-(4)/(17)x+(24)/(17)`

The coefficient next to the x is -4/17. Therefore, the rate of change (slope) of the line is -4/17.