What is the equation of the line, in standard form, that passes through (4, -3) and is parallel to the line whose equation is 4x + y - 2 = 0?

4 x + y = 13
4 x + y = -13
4 x - y = 13

Respuesta :

Given:

The equation of parallel line is

[tex]4x+y-2=0[/tex]

The required line passes through the point (4,-3).

To find:

The equation of required line is standard form.

Solution:

The standard form of a line is

[tex]Ax+By=C[/tex]

Where, A,B,C are constants and the slope of the line is [tex]-\dfrac{A}{B}[/tex].

The given equation is

[tex]4x+y-2=0[/tex]

Here, [tex]A=4,B=1,C=2[/tex]. So, the slope of the line is

[tex]m=-\dfrac{4}{1}[/tex]

[tex]m=-4[/tex]

Slopes of parallel lines are equal. So, the slope of the required line is -4

The required line passes trough the point (4,-3) with slope -4. So, the equation of the required line is

[tex]y-y_1=m(x-x_1)[/tex]

[tex]y-(-3)=-4(x-4)[/tex]

[tex]y+3=-4x+16[/tex]

Isolate variable terms.

[tex]4x+y=16-3[/tex]

[tex]4x+y=13[/tex]

Therefore, the correct option is A.