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What is the solution of this system of linear equations? 3y=3/2x+6 1/2y-1/4x=3 a.(3, 6) b.(2, 1) c.No solution d.Infinite number of solutions

Sagot :

Given:

The system of equations is

[tex]3y=\dfrac{3}{2}x+6[/tex]

[tex]\dfrac{1}{2}y-\dfrac{1}{4}x=3[/tex]

To find:

The solution of the given system of equations.

Solution:

The slope intercept form of a line is

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

Where, m is slope and b is y-intercept.

We have,

[tex]3y=\dfrac{3}{2}x+6[/tex]               ...(i)

[tex]\dfrac{1}{2}y-\dfrac{1}{4}x=3[/tex]            ...(ii)

Rewritten the given equation in slope intercept forms.

In equation (i), divide both sides by 3.

[tex]y=\dfrac{1}{2}x+2[/tex]

Slope of this line is [tex]\dfrac{1}{2}[/tex] and y-intercept is 2.

In equation (ii), multiply both sides by 2 and isolate y variable.

[tex]y-\dfrac{1}{2}x=6[/tex]

[tex]y=\dfrac{1}{2}x+6[/tex]

Slope of this line is [tex]\dfrac{1}{2}[/tex] and y-intercept is 6.

Since slopes of both lines are same but the y-intercepts are different, therefore, the lines are parallel and the system of equations have no solution.

Therefore, the correct option is c.