Question 9 (Multiple Choice Worth 1 points) (04.04 MC)
A skateboard halfpipe is being designed for a competition. The halfpipe will be in the shape of a parabola and v
ground. Using the ground as the x-axis, where should the base of the halfpipe be positioned? Which equation
1
(0, 20); y
x?
+ 20
80
1
(0, 20): Y
x?-
-20
80
1
O(0, 10); y
y-20x+10
0 (0, 10); y ²-10
40+?-1

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.

(x) - (y) = (1 + 4i)

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.