Question

solve this .........​

Answer 1

Answer:

a , b , c , d all option is correct .

Step-by-step explanation:

(a) We know that , the plane .

ax+by + cz + d = 0 contains the line x-a/l = y-b/m = z-c/n if a*a1 + b*b1+ cc1+d = 0

and , al+bm+cn = 0

now we gave a,b,c = (-1,3,-2)

l,m,n = (-3 , 2,1)

Since, -3(-1)+2(3)+1(-3) = 0

The line given in (a) lies on the given plane.

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(b) since , (0)-2(7)+7(-1)+21=0

•°•the point (0, 7, -1) lies on the plane.

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(c) direction ratio of the normal to the given plane are (1,-2,7) which are same as thode of the given in (c) ,so the plane is perpendicular to the line .

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(d)The direction ratio of the normal to the plane given in (d) are same as those of the given plane . so the plane in (d) is parallel to the given plane.

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Answer 2

Answer is given in the pic.