Solve for X-intercept. 3x+y=-1

Question

How do you find the x intercept for 3x+y=-1?

Answer 1

The x-intercept occurs when the line intercepts the x-axis. The y value of 0.

3x + y = 1

3x + 0 = 1

3x = 1

x = 1/3

 

The x-intercept is (1/3, 0)

Answer 2

Hi Sam

 

3x+y=-1

 

The x-intercept is where the graph touches the x axis...

Or, where y=0

 

3x + 0 = -1

3x = -1

x = -1/3

 

x intercept is the point (-1/3, 0)

 

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