IV. Activity 1: Let's Practice! Directions: Write the word SYS if the set of equations illustrates systems of linear equations in two
variables and TEM if not. Write your answer on the space provided.
3x – 2y = 7
1.
15x + y = 1
$2x - y> -2
2. lx - 2y = 1
4x + 7y = 3
3. 12x - 8y = -1
x2 - 3y = 2
ex
- 9y = 3
x- 70
{$
4. lx-
5. Ly = 5​

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte