Which is an equation of the line whose slope is equal to zero?

a. y=1

b. x=2

c. x+y=5

d. x-y=3

A

Step-by-step explanation:

A line with a slope of zero is a horizontal line parallel to the x- axis

The equation of a horizontal line is

y = c ( c is the value of the y- coordinates the line passes through )

Hence y = 1 ← equation of line with slope zero → A

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

step-by-step explanation: