Two quantities, x and y, are directly proportional. if x is tripled, what happens to y? (20 points) a) it is multiplied by 1/3 b) it is tripled c) it is multiplied by 9 d) it depends on the starting value of x

b) It is tripled

Step-by-step explanation:

If x is directly proportional to y, then

x = ky ... 1

Wherw y = x/k

where k is the constant of proportionality.

If x is tripled, the equation becomes

3x = kyo ... 2

From equation 2, yo = 3x/k

Where yo is the new value of y when x is tripled

Based in the new value of y, it can be seen that y also tripled as x tripled.

Note that in a direct variation, increase or decrease in a variable leads to equal increase or decrease in the other variable.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

no its the same as every other grade

step-by-step explanation: