y must have a value of 0 at the x-intercept.
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plug in a 0 for the "x" value of the equation, and solve it :D
If the x intercept is a and the y intercept is b, then the equation of the line is bx + ay = ab
5x - 2y = 20The x-intercept of a line is the point where its y-value is 0. When y=0, we get 5x = 20, or x=4. This means the coordinates of the x-intercept on this line are (4,0).
Assuming that you meant "x - 4y = 20", the x-intercept is x=20, and the y-intercept is y=-5.
To find the y intercept of the line y=2x+10, we must substitute x=0 into the equation. therefore: y=2(o)+10=10. Therefore the y-intercept is 10. Shortcut: the y intercept of any line in the form y=mx+b is simply 'b'. To find the x-intercept, we substitute y=0 into the equation. Therefore 0=2x+10 -10=2x -5=x Therefore, the x-intercept is -5. Shortcut: the x intercept of any line in the form y=mx+b is simply -b/m.