Answer:
0
y = 2
Step-by-step explanation:
Since it's a flat line, the slope is 0.
Since all of the points have a y-value of 2, the equation is y = 2.
Slope = 0
Equation: y = 2
PQ is parallel to x-axis. Slope of the line parallel to x-axis = 0.
Slope of diagonal PQ = 0
Equation of line parallel to x-axis : y = a
Equation of diagonal PQ: y = 2 or y -2 = 0
