What does the symbol EF in the formula indicate that Chang
needs to do?
He needs to find the net force acting on the object in a
direction.
He needs to use only forces acting in the direction of
motion.
He needs to combine the horizontal and vertical forces.
He needs to multiply the horizontal and vertical forces.

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

combine all like terms then its just a 2 step equation

is the anwser b. (-13)?

1/4 is the answer if i recall correctly.