Y= mx+b
Since this line is horizontal it's slope = 0 ==> the y=b
It passes by the point (3,-3) that means b=-3 & the equation is y=-3
See the attachment below.
Hope it helps!
<span>3 is to 4 as 12 is to x, or 3/4 = 12/x </span>
78 rounded to the nearest tenth is 80
C hope this helps you out