How to find the x and y intercepts?

Question

3x+9y=18 

thanks

Answer 1

Hi Youssef, the simplest way to find the x- and y-intercepts when the equation of the line is in standard form, is to set x equal to zero and solve for y. Then set y equal to zero and solve for x. This will give the x- and y-intercepts.

 

Set x = 0, solve for y:

 

3 * 0 + 9y = 18

 

Divide both sides by 9:

 

y = 2

 

Set y = 0, solve for x:

 

3x + 9 * 0 = 18

 

Divide both sides by 3:

 

x = 6

 

The x- and y-intercepts are: (6, 0) and ( 0, 2).

 

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