Which system of equations does this graph represent? Linear graph and parabola. They intersect at negative 1, 3 and 2, 6

1) y = x^2 - 5

y = -x - 3

2) y = x^2 + 2

y = x + 4

3) y = x^2 + 3

y = -x + 2

4) y = x^2 + 4

y = -x - 1

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.