Y + yx; use x = 15, and y = 8

128

Step-by-step explanation:

y+yx

When x=15, y=8

8+(15×8)

=8+120=128

128

Step-by-step explanation:

from the quetsion, given that

y + yx = ?

given that x = 15

y = 8

all we need to do is to substitute for the values of x and y in the question and evaluate.

y + yx =

= 8 + 8 x 15

= 8 + 120

= 128

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

4x and 6y

im not sure though