Use the substitution method to solve the system of equations. y = –4x 8x – y = 6 a.(2, –8)b. (1, –4) c.1/2-4 d.1/2-2

y= -4x and 8x-y=6

what you do is switch the negative y to the other side and move the positive 6 to the other side thus making y=8x-6.

I don't get what those numbers are on the question but the way you solve it is by combining them and putting one y into the other

8x-6=-4x   12x=6   6/12=x   .5=x

then you plug in x to find y in whichever equation:

-4x=y   -4(.5)=y   -2=y

so the final answer would be (.5,-2)

D. (1/2,-2)

Step-by-step explanation:

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.