Solve the following system of equations by graphing.

–4x + 3y = –12
–2x + 3y = –18


Graph b


Graph c


Graph a


Graph d
25 POINTS IF YOU ANSWER CORRECTLY

Solve the following system of equations by graphing 4x 3y 12 2x 3y 18 Graph b Graph c Graph a Graph d 25 POINTS IF YOU ANSWER CORRECTLY class=

Respuesta :

gmany

Answer:

Graph b

Step-by-step explanation:

The equation of a linear function in slope-intercept form:

[tex]y=mx+b[/tex]

m - slope

b - y-intercept

The graph of linear function is a straight line therefore we need only two points to the plotting the graph.

[tex]-4x+3y=-12\qquad\text{add 4x to both sides}\\\\3y=4x-12\qquad\text{divide both sides by 3}\\\\y=\dfrac{4}{3}x-4\\\\for\ x=0\to y=\dfrac{4}{3}(0)-4=0-4=-4\to(0,\ -4)\\\\for\ x=3\to y=\dfrac{4}{3}(3)-4=4-4=0\to(3,\ 0)[/tex]

[tex]-2x+3y=-18\qquad\text{add 2x to both sides}\\\\3y=2x-18\qquad\text{divide both sides by 3}\\\\y=\dfrac{2}{3}x-6\\\\for\ x=0\to y=\dfrac{2}{3}(0)-6=0-6=-6\to(0,\ -6)\\\\for\ x=3\to y=\dfrac{2}{3}(3)-6=2-6=-4\to(3,\ -4)[/tex]

Ver imagen gmany

Answer:  Graph B.

Step-by-step explanation:

I just took the test.