Write the equation in point-slope form of the line that passes through the given points. Point = (1, -2)
Slope = -2

y+2=-2(x-1)

Step-by-step explanation:

point-slope form

(y-y1)=m(x-x1)

m: slope = -2

(x1,y1) = (1,-2)

(y+2)=-2(x-1)

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

i dony know

step-by-step explanation: