Step-by-step explanation:
Given line y=1/3x-4
slope of given line m=1/3
Slope of required line :
m=1/3
As lines are parallel then slope of lines are equal.
<u>U</u><u>s</u><u>i</u><u>n</u><u>g</u><u> </u><u>p</u><u>o</u><u>i</u><u>n</u><u>t</u><u> </u><u>s</u><u>l</u><u>o</u><u>p</u><u>e</u><u> </u><u>f</u><u>o</u><u>r</u><u>m</u><u>:</u>
y-y1=m(x-x1)
p(x1,y1)=(9,8)
y-8=1/3(x-9)
3y-24=x-9
x-3y-9+24=0
<u>x</u><u>-</u><u>3</u><u>y</u><u>+</u><u>1</u><u>5</u><u>=</u><u>0</u>
<u>N</u><u>o</u><u>t</u><u>e</u><u>:</u><u>i</u><u>f</u><u> </u><u>y</u><u>o</u><u>u</u><u> </u><u>n</u><u>e</u><u>e</u><u>d</u><u> </u><u>to</u><u> </u><u>a</u><u>s</u><u>k</u><u> </u><u>a</u><u>n</u><u>y</u><u> </u><u>question</u><u> </u><u>please</u><u> </u><u>let</u><u> </u><u>me</u><u> </u><u>know</u><u>.</u>
1) x+2/x+3 = 4/5
2) 5x+10 = 4x+12 (cross multiply)
3) x+10 = 12
4) x=2
That would be (20*30) - (3*3*5) = 555 cm^2 of the cover is red
This is 555/600 = 0.925 = 92.5% of the cover is red.