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Tamiku [17]
3 years ago
14

Use the discriminant to find all values of b for which the question has one real solution.

Mathematics
1 answer:
Arada [10]3 years ago
4 0
Use the formula 0 = b^2-4ac

0 = -b^2-4(2)(-9)

0 = -b^2+72

b^2 = 72

b = square root of 72

b = 2 real numbers
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Answer:

The system of linear equations has infinitely many solutions

Step-by-step explanation:

Let's modified the equations and find the answer.

Using the first equation:

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Considering the second equation:

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This means that k can be any number different than -2, and for each of these solutions, there is a different solution for y, allowing also, different solutions for x.

For example, if k=0 then

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Now let's try with k=-1, then:

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Step-by-step explanation:

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