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slope =

(y2 - y1) / (x2 - x1)

= 15-0 / 1-0

= 15 / 1

= 15

Step-by-step explanation:

brainliest plz

15

Step-by-step explanation:

a slope is rise over run, basically the change in y over change of x

the rise is how much it goes up or down and the run is how much it goes right

in this case it goes up 15 for every time it goes right 1

so 15/1 is the slope- or 15

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12