Which ordered pair is a solution of the equation? y=7x-2, equals, 7, x, minus, 2
Choose 1
Choose 1

(Choice A)
A
Only (3,15)(3,15)left parenthesis, 3, comma, 15, right parenthesis

(Choice B)
B
Only (-1,-10)(−1,−10)left parenthesis, minus, 1, comma, minus, 10, right parenthesis

(Choice C)
C
Both (3,15)(3,15)left parenthesis, 3, comma, 15, right parenthesis and (-1,-10)(−1,−10)left parenthesis, minus, 1, comma, minus, 10, right parenthesis

(Choice D, Checked)
D
Neither

50.6

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

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step-by-step explanation:

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