Select the equation that describes a vertical line. А: y = -5
B: x - y = -5
C: x + y = 5
D: X = -5

D: X = -5

Step-by-step explanation:

The equation of a vertical line always has the form of x = k, where k = any number. The variable, k, is also the x-intercept.

Here's what x = -5 looks like on a graph.

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

hope it you

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