contestada

Which of the following is an equation of a line parallel to the line x=3 that passes through the point (-4,-3)?

Respuesta :

Answer: The equation of a line parallel to the line x=3 that passes through the point (-4,-3) is x = -4.


Solution

The given line x=3 (x=constant) is a vertical line. A line parallel to this line must be a vertical line with equation x=constant, that means the value of x is always the same. Like this line passes through the point (-4,-3) with abscissa x=-4, this abscissa must be constant, then the equation of this line must be x = -4

we are given

a line parallel to the line x=3

It means that line will be vertical line

and we know that slope of vertical line is always infinity

so,

[tex]m=\infty[/tex]

[tex]m=\frac{1}{0}[/tex]

now, it passes through the point (-4,-3)

so, we can use point slope form of line

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

we can plug values

[tex]y+3=\frac{1}{0}(x+4)[/tex]

we can cross multiply

and we get

[tex]0\times (y+3)=1\times (x+4)[/tex]

[tex]0=(x+4)[/tex]

Subtract both sides by 4

[tex]0-4=(x+4)-4[/tex]

[tex]x=-4[/tex]

So, the equation of line is x=-4..........Answer