y=9x-1⇒ k=9
f`(x₀)=9
f`(x)=2x+3
f`(x₀)=2x₀+3
2x₀+3=9
x₀=3
f(x₀)=(3)^2+3·3-8=10
y-10=9(x-3)
y=9x-17
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Verified answer
y=9x-1⇒ k=9
f`(x₀)=9
f`(x)=2x+3
f`(x₀)=2x₀+3
2x₀+3=9
x₀=3
f(x₀)=(3)^2+3·3-8=10
y-10=9(x-3)
y=9x-17