osirisarellane7245 osirisarellane7245
  • 21-10-2019
  • Mathematics
contestada

Find all values of k so that the following system has no solutions x²+(y-k)²=36 ; y=5x+k.Illustrate with a graph.

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boffeemadrid
boffeemadrid boffeemadrid
  • 23-10-2019

Step-by-step explanation:

[tex]x^2+(y-k)^2=36[/tex]

[tex]y=5x+k[/tex]

Substituting y in the first equation

[tex]x^2+(5x+k-k)^2=36\\\Rightarrow x^2+25x^2=36\\\Rightarrow 26x^2=36\\\Rightarrow x^2=\frac{36}{26}\\\Rightarrow x=\sqrt{\frac{36}{26}}\\\Rightarrow x=\pm 1.17[/tex]

At x = 1.17

[tex]y=5\times 1.17+k\\\Rightarrow y=5.85+k[/tex]

At x = -1.17

[tex]y=5\times -1.17+k\\\Rightarrow y=-5.85+k[/tex]

The intersection points are (1.17, 5.85k) and (-1.17, -5.85k)

The graph would intersect regardless of what value k is.

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