find the equation of the line that contains the given point and the given slope. Write the equation in slope-intercept form.

1. (4, 1) slope = 6


2. (6,-3) slope= -5


3. (-8, 2) slope = -1/2


4. (-7,-1) slope = 0

Respuesta :

Answer:

1. [tex]y=6x-23[/tex]

2. [tex]y=-5x+27[/tex]

3. [tex]y=-\frac{1}{2}x-2[/tex]

4. [tex]y=-1[/tex]

Step-by-step explanation:

- The equation of the line is:

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

Where [tex]m[/tex] is the slope and [tex]b[/tex] is the y-intercept.

- You have to find the y-intercept [tex]b[/tex], so, you must substitute the given point and the slope into each equation and solve for [tex]b[/tex], and then you must rewrite the equation of the line with the slope and the y-intercept calculated:

1. [tex]1=6(4)+b\\ b=-23\\ y=6x-23[/tex]

2. [tex]-3=-5(6)+b\\ b=27\\ y=-5x+27[/tex]

3. [tex]2=-\frac{1}{2}(-8)+b\\b=-2\\ y=-\frac{1}{2}x-2[/tex]

4. [tex]-1=0(-7)+b\\ b=-1\\ y=0x-1\\ y=-1[/tex]