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**Question 1**

\(y = |x+1|\)

**Question 2**

\(y = {1 \over 2}x+2\)

**Question 3**

\(y = {1 \over x }\)

**Question 4**

\(y = {{2- \sqrt{x} \over 5x+1}}\)

**Question 5**

\( x^2y - x^2 + 4y = 0 \)

**Question 6**

\( y^2 = x^3-8x \)

**Question 7**

\( y = 4 - \sqrt{x+3} \)

**Question 8**

\( y = |x^3+x| \)

**Question 9**

\( y = 9-x^2 \)

**Question 10**

\( y = x \sqrt{x+5} \)

**Question 11**

\( x+y=8 \)

\( 4x-y=7 \)

**Question 12**

\( x^2+y = 15 \)

\( -3x + y = 11 \)