Green4House2Kid0 Green4House2Kid0
  • 02-12-2016
  • Mathematics
contestada

the y-intercept or the line 7x-4y=8

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hstyle20 hstyle20
  • 02-12-2016
The answer would be y=(7/4)x-2. You just use reverse operations.
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DCDAncer DCDAncer
  • 02-12-2016
First, you have to convert the equation into slope-intercept form. (A.K.A. get y alone on one side of the equation)

7x - 4y = 8
-7x        -7x

-4y = -7x + 8
----    ----------
-4          -4

y = -7/4x - 2

Now we can plug in 0 for x.

-7/4 * 0 is 0
0 - 2 is -2

The y-intercept is -2.

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