complete the table of values for y=x^2-2x-3 b) which one of the three curves drawn matches y=x^2-2x-3 ii) estimate the value of y when x =2.5 iii) find the values of x when y=1

ratio is 2 : 9

the answer is three

13.5 : 3

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.

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀