Is the line for the equation y = 1 horizontal or vertical? what is the slope of this line? select the best answer.

a.)the line is horizontal. the slope is 0.

b.)the line is horizontal. the slope is 1.

c.) the line is vertical. the slope is undefined.

d.) the line is vertical. the slope is 0.

step-by-step explanation:

here's what happens:

1) the graph of f   = x^2 is shifted 2 units to the right.

2) the resulting graph is reflected in the x-axis, so that the parabola now opens down.

3) this final result is transformed up by 5 units.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.