Line qr goes through points q(0, 1) and r(2, 7). which equation represents line qr?
y – 1 = 6x
y – 1 = 3x
y – 7 = 2x – 6
y – 7 = x – 2

y – 1 = 3x

Step-by-step explanation:

The slope of this line is given by  

Where m is the slope

(x_1, y_1) is the first point, (0,1), and

(x_2,y_2) is the second point (2,7)

Substituting, we get:

The point slope form of a line is given by  

Substituting , we get:

2nd option is right.

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step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2