Please help for 12 points

Step-by-step explanation:

The solution to a system of equations by graphing is found by graphing both equations on a coordinate plane. The solution is the point at which the lines intersect.

First, put both equations in slope-intercept form:

y = x + 4    Already in slope-intercept form

x - y = 1      Isolate y.

-y = -x + 1   Multiply both sides by -1.

y = x - 1

Next, graph both lines:

(See attachment)

In this situation, the lines don't intersect, meaning there is no solution to this system.

is there any attachment? what are the equations?

which expression represents the approximate length of bc?

step-by-step explanation: