Which step is not necessary when solving this system of equations by graphing? 3x-y=4
X+y=-4

A. identify the point of intersection

B. choose a method to graph the equations

C. determine the shaded area for each line

D. write the solution as an ordered pair

bn,mn,n.vn.

step-by-step explanation:

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

on a coordinate grid, point a is at (−4.0, −2.4) and point b is at (4.0, −2.4). point b is a reflection of point a across the –axis. input either a lowercase x or i think is the right awnser

step-by-step explanation:

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step-by-step explanation: