anonymous
  • anonymous
Choose the correct x-intercept & y-intercept of the equation 2x-y=4 ~ x-intercept : (-4,0) , y-intercept: (0,2) ~ x-intercept : (-4,0) , y-intercept: (2,0) ~ x-intercept : (2,0) , y-intercept: (0,-4) ~ x-intercept : (0,2) , y-intercept: (0,-4)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Solve for y: 2 x = 4+y Reverse the equality in 2 x = 4+y in order to isolate y to the left hand side. 2 x = y+4 is equivalent to y+4 = 2 x: 4+y = 2 x Solve for y. Subtract 4 from both sides: Answer: | | y = -4+2 x
anonymous
  • anonymous
Still dont understand .. I got 6
anonymous
  • anonymous
@Luigi0210

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Luigi0210
  • Luigi0210
x-intercept is when y=0 and y-intercept is when x=0
Luigi0210
  • Luigi0210
No giving out answers >.<
anonymous
  • anonymous
srry
anonymous
  • anonymous
So how do I figure out which points go with it without graphing it .
anonymous
  • anonymous
standar equation of a line with x intercept (a,0) and y-intercept (0, b) xa+yb=1 here the equation is x+2y=4 divide the whole equation by 4 x4+y2=1
Luigi0210
  • Luigi0210
Plug in 0 for x to find the y: |dw:1378311528740:dw|
anonymous
  • anonymous
Okay .. :I
Luigi0210
  • Luigi0210
Okay, baby steps: First plug in 0 for y
anonymous
  • anonymous
^ This is what I wanted xD
anonymous
  • anonymous
2x-0=4
Luigi0210
  • Luigi0210
Good, so that leaves you with 2x=4 right? Now solve for x
anonymous
  • anonymous
x=2
Luigi0210
  • Luigi0210
Yes! So now you got your points: |dw:1378311927158:dw| Now plug them in and that will give you your x-intercept
anonymous
  • anonymous
I got 4 >_>
anonymous
  • anonymous
Or do you mean (2,0)
Luigi0210
  • Luigi0210
Haha, I was worried there for a second. Yes, (2, 0)
anonymous
  • anonymous
So it would be (2,0) for x-intercept & (0,4) for y-intercept ?
Luigi0210
  • Luigi0210
Do you wanna try and solve for the y-intercept?
anonymous
  • anonymous
I can/try/ .
Luigi0210
  • Luigi0210
Okay, so plug in 0 for x
anonymous
  • anonymous
2(0)-y=4 0-y=4 0y=4 y=0
Luigi0210
  • Luigi0210
Uh, no the 0 doesn't multiply..
anonymous
  • anonymous
But 2 times 0 is .. 0 ? .-.
Luigi0210
  • Luigi0210
I meant on the 0y part, the 0 just leaves, so it's just: -y=4
anonymous
  • anonymous
*facepalm*
anonymous
  • anonymous
y=-4
Luigi0210
  • Luigi0210
Yup :)
Luigi0210
  • Luigi0210
So now plug in y=-4 and x= 0: |dw:1378313271934:dw|
anonymous
  • anonymous
Thank you . c: Sorry for beinga deeeerrrp . xD
Luigi0210
  • Luigi0210
It's alright, at least you're trying :)
anonymous
  • anonymous
2x-y=4 divide by 4 \[\frac{ 2x }{4 }+\frac{ y }{ -4 }=1\] \[\frac{ x }{2 }+\frac{ y }{ -4 }=1\] x-intercept=2 y-intercept=-4
anonymous
  • anonymous
^ I'm done , thanks tho .

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