What is the area of the triangle shown below?

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

Find the length of cu, the triangles are similar.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1