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ok so im really bad at graphs could you kinda walk me through it

yeah

no this is usually where i get lost

yeah

What is the value of y at that point?

1?

Do you know how to find the gradient of the line?

no

4?

How did you get that?

yeah

So then can you write the equation of the line given what we've found out?

Y=1X+-2

Not quite, you got the y-intercept and the gradient mixed up.

The equation of a line is y=(gradient)x +(y-intercept), which you'll often see as y=mx+c.

ok so the right way is Y=-2x+1

Yes :) Do you think you could apply this method to other questions like this now?

yeah

Cool :) if you have any problems don't hesitate to ask!

When is the function constant?
X=_____to X=_____

A constant function is represented as a horizontal line on a graph.