Topic 8: Line of Best Fit 28. The number of students enrolled at Beach Manor Preschool during various years is given in the
table below. Use the line of best fit to predict the number of students enrolled in 2010.

I know the number of students, it’s 107, but I don’t know the equation?

1984
1987
1999
2002
1990
52
1993
61
1996
72
Entrants
39
45
78
85
equation:

# students: 107

where is the graph? need more info

answer:   the paragraph proof is mentioned below.

step-by-step explanation:

given: in a δxwy where

such that, ∠wzx ≅ ∠yzx and zw≅zy

we have to prove that: segment zx is a perpendicular bisector of segment wy.

prove: since, zw≅zy ⇒ ∠wzy is a supplementary angle.

then, ∠wzy= 180°

⇒∠wzx + ∠yzx = 180° ( because xz divides ∠wzy into two parts)

but, ∠wzx ≅ ∠yzx ( given)

⇒∠wzy+∠wzy=180° ( by substitution)

⇒2∠wzy=180°

⇒∠wzy=90°

⇒∠wzy=∠yzx =90°

therefore, xz⊥wy where wz=zy

⇒zx is a perpendicular bisector of wy.