D will be The Diameter goes straight across the circle, through the center. The Circumference is the distance once around the circle.
4 units because the y-intercept is how you figure out the difference. You take the y-intercept, find the absolute value of it, and you found the distance of the line! This is of course considering the lines are parallel, meaning the slope is the same.
<span>d + 3 < 12
subtract 3 on both sides
d + 3 - 3 < 12 - 3
simplify
d < 9
answer
</span><span>d < 9</span>
Y= 0 would be perpendicular because it's a horizontal line, and x= 12 is a vertical line
X=0 would be parallel because they are both vertical lines
