How to slove a literal equation for a variable

Give all possible names for the line shown.calculation tip: lines can be written with either point first.

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?