Which statement best describes the first step of solving the given system of equations by graphing?
3x-y=4
x+y=-4

a. identify the point of intersection.
b. graph each line.
c. write each equation in slope-intercept form.
d. write the solution as an ordered pair.

C. Write each equation in slope-intercept form.

Step-by-step explanation:

We have been given a system of equations and we are asked to choose the correct option about first step of graphing the system of equation.

Since we know that slope-intercept form of equation is in form , where,

m = Slope of the line,

b = Initial value or y-intercept.

When a system of equations is in slope-intercept form, then we can easily graph it as y-intercept will be the point where line will intersect y-axis. The slope of line will show how steep will be the line.

Therefore, option C is the correct choice.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.