Saturday

April 19, 2014

April 19, 2014

Posted by **Christina** on Thursday, October 13, 2011 at 10:21am.

a. 3x-2y=-1

b.3x-2y=1

c.3x+2y=1

d.3x+2y=-1

I don't understand, can anyone help me please?

- Algebra -
**Christina**, Thursday, October 13, 2011 at 10:36amWould this be B?

3(-1) - 2(-2) = 1

(-3) - (-4) =1

1 = 1

- Algebra -
**Steve**, Thursday, October 13, 2011 at 4:23pmYes.

However, I don't think you understand why. Just checking to see which of the lines contains your point is not enough.

The line y = -2/3x - 1 has slope -2/3.

Any line perpendicular to that line has slope -1/(-2/3) = 3/2.

So, now you have a slope and a point.

Using the point-slope form a line,

y-(-2) = 3/2 (x-(-1))

y+2 = 3/2 (x+1)

2(y+2) = 3(x+1)

2y + 4 = 3x + 3

3x - 2y = 1

**Related Questions**

Algebra - What is 2x=7? Is it a standard form, or slope-intercept form, or not a...

Algebra - how would you write y=8 in standard form of a linear equation? *isnt ...

algebra - could you please check this answer for me and correct. thanks given ...

math/Check! - a. An ellipse is formed by stretching the graph of x^2+ y^2=1 ...

algebra - 4)Write the equation x^2-2x+y^2+4y=11 in standard form. answer= (x-1)^...

someone please chek my math! - a. An ellipse is formed by stretching the graph ...

algebra - Could you please help me?? point-slope form linear equation y-3 = 3(x+...

Algebra - I know that standard form is Ax+By=C, but I'm not really sure how to ...

college algebra--need help please!! - write the standard form of the equation ...

Calculus - Complete the square to write the equation x^2 + y^2 - 6x - 2y + 4 = 0...