(Hurry, please!) A line passes through the point (8,-1) and has a slope of 5/4. Write an equation in slope intercept form for this line.​

Respuesta :

Answer:

y = 5/4x -11

Step-by-step explanation:

The slope intercept form of a line is

y = mx+b

where m is the slope and b is the y intercept

y = 5/4 x + b

Substitute the point into the line

-1 = 5/4(8) +b

-1 =10 +b

Subtract 10 from each side

-11 = b

y = 5/4x -11

Answer:

[tex]\huge \boxed{y=\frac{5}{4} x-11}[/tex]

Step-by-step explanation:

The slope-intercept form of a line is written as,

[tex]y=mx+b \\ \\ \\ \sf m= slope \\ \\ b=y -intercept[/tex]

The slope is given.

[tex]\displaystyle y=\frac{5}{4} x+b[/tex]

The line passes through the point (8, -1).

[tex]x=8 \\ \\ y=-1[/tex]

Plugging in the values.

[tex]\displaystyle -1=\frac{5}{4} (8)+b[/tex]

Solving for b or y-intercept of the line.

[tex]\displaystyle -1=\frac{40}{4} +b[/tex]

[tex]-1=10+b[/tex]

[tex]-11=b[/tex]

The y-intercept of the line is -11.

[tex]\displaystyle y=\frac{5}{4} x-11[/tex]

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