The equation y = 3.5x represents the rate, in miles
per hour, at which laura walks.
the graph at right represents the rate at
which piyush walks. determine who walks
faster. explain.

Piyush walks faster than Laura

Step-by-step explanation:

we know that

The rate or speed is equal to the slope of the linear equation

Laura

y=3.5x

The slope is

Piyush

Determine the slope of the line

we have the points

(0,0) and (4,18)

The line represent a direct variation (because passes through the origin)

so

For x=4 h, y=18 mi

substitute

Compare the slopes

therefore

Piyush walks faster than Laura

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

i think it is 18

step-by-step explanation: