camosloppy3150
18.10.2019 •
Mathematics
Find the coordinates of the endpoint s if t(17, -16) is the midpoint of sr qnd the coordinates of r are (-14, 20)
a- (3, -36)
b- (31, -36)
c- (3, 17)
d- (48, -52)
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Ответ:
y = - (x - 3)(x + 5)
Step-by-step explanation:
Given the x- intercepts are x = 3 and x = - 5 then the corresponding factors are
(x - 3) and (x + 5)
The equation is the the product of the factors, that is
y = a(x - 3)(x + 5) ← a is a multiplier
To find a substitute (- 1, 8) into the equation
8 = a(- 1 - 3)(- 1 + 5) = a(- 4)(4) = - 16a ( divide both sides by - 16 )
- = a
Then
y = - (x - 3)(x + 5) ← in factored form