Question

What is the equation of a horizontal line passing through the point (2, 10)?

Answer 1

im pretty sure it is y=10

Answer 2

yep totally sure it is y=10

Answer 3

If we drew the point, (2, 10)

and we wanted to create an equation that contained all adjacent horizontal points to (2, 10), we simply note that the y-value must always be y=10. That way, you can plot any point (x, 10) regardless of x to create the horizontal you are looking for.