Determine the intercepts of the line. y=−2x−21

Hi there!

Let's first determine the x-intercept. When dealing with an x-intercept we must realise the y-coordinates equal 0.


Add 21 to both sides.


Divide both sides by -2.


Therefore, the x-intercept is the point (10 1/2; 0).

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Now let's continue with the y-intercept, which is easier. When dealing with an y-intercept we must realise the x-coordinates equal 0.


Therefore, the y-intercept is the point (0; -21).