Can someone me answer these two questions? i wanna know what's right and wrong. correct me if necessary

for #1 i chose a
and for #2 i chose d

Remember that the general equation of a line is , where:
is the slope, and  is the y-intercept; so to find the y-intercept, solve for  and identify .
Now, to find the x-intercept, just replace  in your line equation with , and solve for 
Lets apply those procedures to our two questions:

1. - y-intercept:




Notice that now we have our line equation in the form  with  and ; sine  is the y-intercept, we can conclude that the y-intercept of our equation is 8.

x-intercept:
First, lets replace  with :

And then, we can solve for  to find our x-intercept:



We can conclude that our x-intercept is -4; thus the correct answer in your list is the fourth one: x-intercept is -4; y-intercept is 8.

2. y-intercept:




We can conclude that our y-intercept is 20.

x-intercept:




We can conclude that our x-intercept is 16; thus the correct answer in your list is, once again, the fourth one: x-intercept is 16; y-intercept is 20.