Could someone please explain I keep getting the wrong answer

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.

What is the slope of the equation y =

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319