Instructions: type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. is parallel to . and are perpendicular to and . the ratio of the lengths of and is : .

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.