Look at this system of equations. -3x+3y=12
y=x+4
The solution set of this system is best explained by which of these statements?

A
The graphs of the equations are parallel lines because they have the same slope but different y-intercepts. The system has no solution.

B
The graphs of the equations are the same line because the equations have the same slope and the same y-intercept. The system has infinitely many solutions.

C
The graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. The system has exactly one solution.
D
The graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. The system has exactly one solution.

D. The graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. The system has exactly one solution.

Step-by-step explanation:

Hope it helps you

a rotation about point l

step-by-step explanation:

quizlet

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.