If f(x)=-2xsquared+x-5 what is f(3)

9514 1404 393

  -20

Step-by-step explanation:

Put 3 where x is and do the arithmetic.

  f(3) = -2·3² +3 -5

  f(3) = -2·9 +3 -5 = -18 +3 -5 = -15 -5

  f(3) = -20

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Sometimes it is easier to evaluate polynomials when they are written in Horner form:

  f(x) = (-2x +1)x -5

  f(3) = (-2·3 +1)(3) -5 = -5(3) -5 = -20

my acc plz

step-by-step explanation:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is