6x+3y=15 for y. What does y equal if x=2?if x=5?

if x = 2 , y = 1

if x = 5 , y = -5

Step-by-step explanation:

6(2) + 3y = 15

12 + 3y = 15

12 + 3(1) = 15

y = 1

6(5)+3(y) = 15

30 + 3(-5) = 15

30 - 15 = 15

y = (-5)

1 and -5

Step-by-step explanation:

let's start with moving y to one side for convenience sake.

6x+3y=15

subtract 6x on both sides

3y=15-6x

divide by 3 on both sides

y=5-2x

all you have to do is replace x with whatever number you want it to equal. starting with 2:

y=5-2(2)=5-4=1

now let's replace x with 5

y=5-2(5)=5-10=-5

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.