anonymous
  • anonymous
How many solutions does this system of equations have? x-4y=13 5x-20y=63
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Callisto
  • Callisto
for the 2nd equation, take out 5 as the common factor on the left hand side , and divide both sides by 5, can you show me what would you get?
anonymous
  • anonymous
would it have none?
Callisto
  • Callisto
if you take out the common factor 5x-20y=63 5(x-4y) = 63 then divide both sides by 5 5(x-4y) /5= 63/5 (x-4) = 63/5

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anonymous
  • anonymous
so it would be infinite??
anonymous
  • anonymous
it would only have 1.Correct??
Callisto
  • Callisto
after that , rewrite the 2 equations x-4y=13 => x-4y-13 =0 (x-4y) = 63/5 => x-4y -63/5 =0 So , you can see that they have the same slope, but different y-int So they are //lines, like this |dw:1332646830920:dw| So how many intercept(s) can you see?
anonymous
  • anonymous
1
Callisto
  • Callisto
where?
anonymous
  • anonymous
What i the answer??
anonymous
  • anonymous
is*
Callisto
  • Callisto
sorry i won't give you the answer directly this time.. you should work it out yourself
Callisto
  • Callisto
have you ever seen 2 parallel lines having intercept(s) ?

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