Help meeeeeeeeeeeeeeee

Question

Help meeeeeeeeeeeeeeee

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Answer 1

Y=x²-6x+5
y=2,5x-13

x²-6x+5=2,5x-13
x²-6x-2,5x+5+13=0
x²-8,5x+18=0
D=(-8,5)²-4*18=72,25-72=0,25=0,5²
x₁=(8,5-0.5)/2=8/2=4
x₂=(8,5+0,5)/2=9/2=4,5

y₁=2,5*4-13=10-13=-3
y₂=2,5*4,5-13=11,25-13=-1,75

Comments

а значения для второй переменной ?!