Write, in slope intercept form, the equation of the line that passes through (8, -9) and has a slope of -5/4.

Respuesta :

Answer:

The equation in the slope-intercept form will be:

[tex]y=-\frac{5}{4}x+1[/tex]

Step-by-step explanation:

Given

  • slope = m = -5/4
  • point = (8, -9)

As we know that the equation of a line in point-slope form is

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

substituting the values m = -5/4 and point = (8, -9)

[tex]y-\left(-9\right)=\frac{-5}{4}\left(x-8\right)[/tex]

[tex]y+9=\frac{-5}{4}\left(x-8\right)[/tex]

Writing the equation in slope-intercept form

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

where m is the slope, and b is the y-intercept

so the equation of the line in slope-intercept form becomes

[tex]y+9=\frac{-5}{4}\left(x-8\right)[/tex]

subtract 9 from both sides

[tex]y+9-9=\frac{-5}{4}\left(x-8\right)-9[/tex]

[tex]y=-\frac{5}{4}x+1[/tex]

Therefore, the equation in the slope-intercept form will be:

[tex]y=-\frac{5}{4}x+1[/tex]