Which of the following expressions are equivalent?

Mark all that apply.
A 2(x+4)
B 8+2x
C 4+2x
D x+8
E 3(x+4)−(4+x)

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.