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

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.