The line 7x - 21y = 420 using intercepts (60, 0) and (0, -20) is graphed and attached
Graphing the line using intercepts
From the question, we have the following parameters that can be used in our computation:
7x - 21y = 420
Set x = 0 to calculate the y-intercept
So, we have
7(0) - 21y = 420
- 21y = 420
This gives
y = -20
So, the y-intercept is (0, -20)
Set y = 0 to calculate the x-intercept
So, we have
7x - 21(0) = 420
7x = 420
This gives
x = 60
So, the x-intercept is (60, 0)
The line using intercepts is graphed and attached