How do you find the focus of the parabola with directrix y=1 and vertex (1,2)?
1 Answer
Aug 25, 2017
Explanation:
#"the focus is the same distance from the vertex as the"#
#"directrix is from the vertex but on the other side"#
#"from the directrix"#
#"the distance p from the directrix "=2-1=1#
#rArr"focus at "(1,2+p)=(1,2+1)=(1,3)#
