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Can I get help with these two

8. Give a unit vector (a) In the same direction as $v=2i+3j?$. (b) Perpendicular to $v$. 9. A plane has equation $z=5x?2y+7$. (a) Find a value of $?$ making the vector $?i+j?+0.5k$ normal to the plane. (b) Find a value of $a$ so that the point $(a+1,a,a?1)$ lies on the plane.

Solution (8)(a) given vector v?=2i+3junit vector in direction of v?=v?|v?|v^=v?||v?||=2i+3j2i+3j=2i+3j4+9=2i+3j13=213i+313j