Question

Write the equation of the horizontal line passing through the point (-1, -8).

Answer 1

Do you know how to work out the gradient of a line when given two points?

Answer 2

no i dont know anything like this

Answer 3

Wait...the line is horizontal yes? So all you need to know about the line is the y co-ordinate which will stay the same for every point on the line. Can you see what it is?

Answer 4

yes and im not sure

Answer 5

Do you think you could draw the line?

Answer 6

no

Answer 7

Can you point to the point (-1, -8) on a graph?

Answer 8

no cause its on a screen and it just says to do do what the question i asked

Answer 9

Now if you draw a horizontal line through it you should be able to see that every point on it has the same y co-ordinate. If this is true then the equation of the line is y=?, where ? is the y co-ordinate of every point on the line.
Can you do it now?