Math, asked by janson110109, 1 year ago

find the value of k for which the line y= kx - 10 meets the curve x2 + y2=10x

Answers

Answered by harmandeepkaursidhu0
1

Answer:

4x

Step-by-step explanation:

x2+y2=10x

y2= 10x-2x

2y= 8x

y= 8x/2

y=4x

Answered by islamfatema877
7

Answer:

k ≥ 0.75

Step-by-step explanation:

²+y²=10

²+(k-10)²=10

² + (k)²-2 x k x 10 +10²=10

²+k² ²-20k+100-10=0

(1 + k²)² - (20+ 10) + 100= 0

according to the question:

                                   b² - 4ac ≥ 0

                                   [-(20k + 10)]²-4 x ( 1+k²) x 100≥0

                                   (20k)²+ 2 x 20k x 10 + 10² -400 - 400k² ≥0

                                   400k² + 400k +100 -400-400k ≥0

                                    400k-300≥0

                                     400k≥300

                                        k≥300/400

                                        k≥0.75

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