The line crosses the y-axis at y=4, so will have an equation of the form
... y = (something)·x + 4
The line rises from left to right, so has a positive slope. That is, the "(something)" must be greater than zero.
The only selection that meets these criteria is
... B y = 2x + 4
The width of the garden is 78
You just divide 7722 by 99 (which is 78)
It would have changed by 1/3 is ur answer
I think the answer is B.
Hope this helps.