What is the equation of a line that passes through the point (8, 1) and is perpendicular to the line whose equation is y=−2/3x+5 ? Enter your answer in the box.

Respuesta :

Answer:

y = [tex]\frac{3}{2}[/tex] x - 11

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = - [tex]\frac{2}{3}[/tex] x + 5 is in this form

with m = - [tex]\frac{2}{3}[/tex]

given a line with slope m then the slope of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{-\frac{2}{3} }[/tex] = [tex]\frac{3}{2}[/tex], hence

y = [tex]\frac{3}{2}[/tex] x + c ← is the partial equation

to find c substitute (8, 1) into the partial equation

1 = 12 + c ⇒ c = 1 - 12 = - 11

y = [tex]\frac{3}{2}[/tex] x - 11 ← equation of line


Answer:

[tex]y = \frac{3}{2} x-11[/tex]

Step-by-step explanation:

We have to find the equation a line which passes through the point (8, 1) and is perpendicular to a line with the equation [tex]y = - \frac{2}{3} x+5[/tex].

So the slope for this equation will be the negative reciprocal of the line which is perpendicular to it i.e. [tex]\frac{3}{2}[/tex].

Finding the y-intercept of the line:

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

[tex]1=\frac{3}{2} (8)+c[/tex]

[tex]c=-11[/tex]

Therefore, the equation of the line will be [tex]y = \frac{3}{2} x-11[/tex].