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Question from Ashley, a student:

6x+y=9

how do you do the x and y intercept of this equation

Thanks for your help

Hi Ashley,

Before solving for an x or y intercept, first we must review what that means. An x-intercept, lies on the x-axis and at that point y will ALWAYS = 0. Similarly for y-intercept, it will be on the y-axis and at that point x will ALWAYS = 0.

ex: find the x and y intercept of the equation 3y - 4x = 12.

X-intercept:
** we know that when finding a x-intercept y=0, so we will sub in a zero for y and solve for x**

3(0) - 4x = 12
0 - 4x = 12
x = - 3

Y-intercept:
**we know that when finding a y-intercept x=o, so we will sub in a zero for x and solve for y**

3y - 4(0) = 12
3y - 0 = 12
y = 4

Good luck and I hope that helps.

Jaymi

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