Which equation does the graph of the systems of equations solve?

1/2x + 4 = 2x − 1

−1/2x + 4 = −2x − 1

−1/2x − 4 = 2x − 1

1/2x − 4 = −2x + 1

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

What are the values of a, b, and c in the quadratic equation 0 = x2 – 3x - 2? a = 1, b = 3, c = 2 a=, b = -3,c=-2 a = 1, b = 3, c= 2 a = 1.0= -3, c = 2

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?