Identify an equation in point-slope form for the perpendicular to y= -1/2x+11 that passes through (4, -8). A. y - 4 = 2(x + 8) B. y - 8 = 1/2(x+4 C. y + 8 = 2(x - 4) D. y + 8 = 1/2(x - 4)

C.

Step-by-step explanation:

Perpendicular ⇒ So the slope will be the negative reciprocal to this slope

Slope = m = 2

Point = (x,y) = (4,-8)

So, x = 4, y = -8

Putting in the slope-intercept form

-8 = (2)(4) + b

b = -8-8

b = -16

Now we'll put it in the slope-intercept form

y = 2x-16

=> y = 2x-8-8

=> y+8 = 2(x-4)

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm