Find the equation of the line through (-9, 2); perpendicular to y= -1

[bcm322]

Find the equation of the line through (-9, 2); perpendicular to y= -1.
Use standard form : y=mx+b

 

[MarkFL]

Hello, and welcome to MHB! (Wave)

What will the slope of the requested line be?

 

[bcm322]

That's all the information given for the homework problem.
I'm stuck on this unit

 

[Olinguito]

Find the equation of the line through (-9, 2); perpendicular to y= -1.
Use standard form : y=mx+b

Did you make a typo? Perhaps you mean the line $\color{black}y=\color{red}x\color{black}-1$, or something like that?

Spoiler

The answer to the problem as you type it cannot be put the standard form $y=mx+b$.

 

[MarkFL]

Did you make a typo? Perhaps you mean the line $\color{black}y=\color{red}x\color{black}-1$, or something like that?

Spoiler

The answer to the problem as you type it cannot be put the standard form $y=mx+b$.

Oops...I didn't catch that. Good eye! :)

 

[bcm322]

View attachment 8407

 

[MarkFL]

Okay, when we have a line of the form:

\(\displaystyle y=k\)

Where \(k\) is some real number, what does the graph of such a line look like?

By the way, standard form for a line is usually meant to be:

\(\displaystyle Ax+By=C\)

The form you cited initially is the slope-intercept form, and the line we're seeking cannot be written in that form, as noted by Olinguito.