Hi

For Example: 

Line: y = x + 4, crosses the y-axis at Pt(0,4) That is: x = 0

Line: y = x + 4, crosses the x-axis at Pt(-4,0) That is: y = 0

If the point is on the y axis(y-intercept)...x will be zero

If the point is on the x axis(x-intercept)...y will be zero

Picturing the graphing has always been helpful to me.

Hope it works for You!



 

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