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EmmaH
please explain thi i dont get it:( Which of the following are the x and y intercepts of the equation 4x - 2y = 8?
change it to slope-intercept form first
divide everything by -2, then you'll be in slope-intercept form
so now you can tell what the y intercept is. what is it?
Basically, what you do is you change it to y=mx+c first. If we rearrange it like that, it'd look like this: \[y=2x-4\] Then you know that the y-intercept is -4. To find the x-intercept, you make y=0 and solve for x. \[0=2x-4\] \[4=2x\] \[x=2\] So the y-intercept is -4 and the x-intercept is 2.
ok what makes it a y intercept?
We know that when y=mx+c. C is always the y-intercept and m is the slope :)
ok so the answer is the last one?(3, 0) and (0, 4) (2, 0) and (0, 4) (-2, 0) and (0, -4) (2, 0) and (0, -4)
Here is a short video http://www.khanacademy.org/math/algebra/linear-equations-and-inequalitie/v/x--and-y-intercepts
Yes I would assume so!
i have a computer block thing i cant watch videos sorry=(