Which represents a quadratic function?

b is the answer

Step-by-step explanation:

f(x) = ax^2 + bx + c

c)

Step-by-step explanation:

Hi there!

A function, when it comes to discussing the degree of a polynomial one. We classify them accordingly to the highest exponent.

f(x)=-3x+2 (1st degree since -3x=-3x¹)

f(x)=0x² +3x-3 well, 0x²=0 then f(x)=0x² +3x-3=f(x)=3x-3 (1st degree Linear function with b≠ 0)

f(x) =-7x²-x+2 (2nd degree -Quadratic Function)

f(x)=2x³+2x²-4 (3rd degree -Cubic Function)

So it's the third one from top to bottom, or c) f(x)=-7x²-x+2

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

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