The equation in point slope is:
y-y1=m(x-x1)
y-6=5(x-2)
<u>I</u><u>f</u><u> </u><u>w</u><u>e</u><u> </u><u>h</u><u>a</u><u>v</u><u>e</u><u> </u><u>t</u><u>o</u><u> </u><u>f</u><u>i</u><u>n</u><u>d</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>t</u><u>o</u><u>t</u><u>a</u><u>l</u><u> </u><u>n</u><u>u</u><u>m</u><u>b</u><u>e</u><u>r</u><u> </u><u>o</u><u>f</u><u> </u><u>c</u><u>o</u><u>i</u><u>n</u><u>s</u><u> </u><u>t</u><u>h</u><u>e</u><u>n</u><u> </u><u>w</u><u>e</u><u> </u><u>c</u><u>a</u><u>n</u><u> </u><u>u</u><u>s</u><u>e</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>f</u><u>o</u><u>l</u><u>l</u><u>o</u><u>w</u><u>i</u><u>n</u><u>g</u><u> </u><u>rule:</u>
- <u>I</u><u>f</u><u> </u><u>E</u><u>a</u><u>c</u><u>h</u><u> </u><u>P</u><u>u</u><u>r</u><u>s</u><u>e</u><u> </u><u>C</u><u>o</u><u>n</u><u>t</u><u>a</u><u>i</u><u>n</u><u>s</u><u> </u><u>8</u><u>c</u><u>o</u><u>i</u><u>n</u><u>s</u><u> </u><u>,</u><u>t</u><u>h</u><u>e</u><u>n</u><u> </u><u>w</u><u>e</u><u> </u><u>c</u><u>a</u><u>n</u><u> </u><u>f</u><u>i</u><u>n</u><u>d</u><u> </u><u>t</u><u>o</u><u>t</u><u>a</u><u>l</u><u> </u><u>n</u><u>u</u><u>m</u><u>b</u><u>e</u><u>r</u><u> </u><u>o</u><u>f</u><u> </u><u>c</u><u>o</u><u>i</u><u>n</u><u>s</u><u> </u><u>b</u><u>y</u><u> </u><u>m</u><u>u</u><u>l</u><u>t</u><u>i</u><u>p</u><u>l</u><u>y</u><u>i</u><u>n</u><u>g</u><u> </u><u>8</u><u> </u><u>t</u><u>o</u><u> </u><u>t</u><u>h</u><u>e</u><u> </u><u>n</u><u>u</u><u>m</u><u>b</u><u>e</u><u>r</u><u> </u><u>o</u><u>f</u><u> </u><u>t</u><u>o</u><u>t</u><u>a</u><u>l</u><u> </u><u>p</u><u>u</u><u>r</u><u>s</u><u>e</u>
<u>T</u><u>h</u><u>u</u><u>s</u><u>,</u>
<h3><u>R</u><u>u</u><u>l</u><u>e</u><u> </u><u>i</u><u>s</u><u> </u><u>:</u></h3>
<u>︎⠀⠀ ⠀⠀ ⠀⠀ ⠀</u><u>︎⠀⠀ ⠀⠀ ⠀</u><u>8</u><u>×</u><u>T</u><u>o</u><u>t</u><u>a</u><u>l</u><u> </u><u>N</u><u>u</u><u>m</u><u>b</u><u>e</u><u>r</u><u> </u><u>o</u><u>f</u><u> </u><u>P</u><u>u</u><u>r</u><u>s</u><u>e</u><u>.</u>
<h2><u>─━─━─━─━─━─━─━─━─━─━─━─━─</u></h2>
To solve the question, first factorize both fraction,which makes:
2 1/6 - 3 4/9
= 2/6 - 12/9
= 1/3-4/3
= -3/3
= -1
Hope ot helps!
Answer - D.
you basically find the equation of the line first and eliminate the wrong answers...
Strategy: before u do any of this, label your coordinates as (X1,Y1) and (X2,Y2) and u can choose any of ur points to be as x1 or x2 or y1 or y1...
basically, I'll choose (6,7) as (x1,y1) and (2,-1) as (x2,y2). SO,
First you have to find the gradient (m) of the line.
you do this by using the formula m = Y2-Y1 / X2-X1 (where '/' is division sign) ....
Put the numbers in their respective places and your gradient will be 2x. we put the x after our number to represent it as a gradient as the straight line formula is y = mx+c and you've found the m.
NOW.
use the formula Y-Y1=m(x-x1) to find the equation of the line.Again u can use any Y1 and X1 here but remember your m is 2
replace the digits and solve...Hopefully you'll get sth like this if you use the points (6,7):
Y-7 = 2(x-6) ....
y=2x-12+7...
Y=2x-5! <<<< this is your straight line equation!
Now all u gotta do is rearrange all your options into y = mx+c.
D. is incorrect as it gives us y=2x+5 and not y = 2x-5 unlike the others
Hope you get it!