To find a vector that has the same direction as the vector U = (01, U2, U3) but a length of 7, we should multiply the unit vector of indicated by (01, U2, U3) , by 7. True False Question 6 2 pts Which of the following gives the equation of a line in R3 ? All three give the equation of a line in R3 OF(1) = (x0, yo, zo ) + ( a, b, c)t OF (1) = (x0 + at , yo + bt , zo + Ct ) O x = xo + at, y = yo + bt, z = zo + ct