The most appropriate choice for slope of a line will be given by-
Two lines are perpendicular to one another when the product of their slopes is equal to -1
What is slope of a line?
Slope of a line is the tangent of the angle which the line makes with the positive direction of x axis
If [tex]\theta[/tex] is the angle which the line makes with the positive direction of x axis, then slope of the line is given by
[tex]m = tan\theta[/tex]
If the line passes through [tex](x_1, y_1)[/tex] and [tex](x_2,y_2)[/tex]
slope = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
Here,
Two lines are perpendicular to one another when the product of their slopes is equal to -1
To learn more about slope of a line, refer to the link-
https://brainly.com/question/3493733
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