You can set this problem up like this:
48/4 = y/11
Cross multiply
48*11 = 4y
528 = 4y
528 divided by 4 = 132
So when w equals 11 y equals 132
11
y=11
If: y+15 = 11 Then: y = -4
If: y+15 = 11 Then: y = -4
11
11
12 x 4 = 48 or to phrase it a different way: if 12y = 48 y = 48/12 = 4
x = 11 y = 16
11
If: 2Y+3 = 11 then the value of Y is 4
4
slope intercept form y = mx + b 8x-6y = 48 -6y = -8x + 48 y = (-4/3)x + 8