Answer:
r=<1,0,9>+t<1,2,1>
and
x=1+t
y=2t
z=9+t
Step-by-step explanation:
A vector perpendicular to the plane :

is given by (a,b,c)
So a vector perpendicular to given plane will have :
(1,2,1)
..
1 Remove parentheses.
2(5c−7)≥c−3
2 Expand.
10c−14 ≥ c −3
3 Add 14 to both sides.
10c-14+14≥ c − 3+14
4 Simplify c−3+14 to c+11
10c≥c+11
5 Subtract c from both sides.
10c−c≥11
6 Simplify 10c−c to 9c
9c≥11
7 Divide both sides by 9.
c ≥11/9
It is less than 2. I hope this helps!