How do you use the cover-up method to solve for the x and y intercept?

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How do you use the cover-up method to solve for the x and y intercept?

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Answer 1 · 2014-11-02T13:13:25

I suppose that "cover-up" is a friendlier term for "setting a variable equal to zero," so if you are looking for the $x$ -intercept of a line, then set $y$ equal to zero, and for $y$ -intercept, set $x$ -equal to zero.

Example

Let us find the $x,y$ -intercepts of the line

$2x+3y=12$ .

To find the $x$ -intercept, set $y=0$ .

$=> 2x+3(0)=12 => 2x=12 => x=6$

So, the $x$ -intercept is $6$ .

To find the $y$ -intercept, set $x=0$ .

$=> 2(0)+3y=12 => 3y=12 => y=4$

So, the $y$ -intercept is $4$ .

I hope that this was helpful.

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How do you use the cover-up method to solve for the x and y intercept?

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