Posted by **ann** on Thursday, January 12, 2012 at 10:22pm.

Could you please help me??

point-slope form linear equation

y-3 = 3(x+1)

what is the equation in standard form of a perpendicular line that passes through (5,1). i think you take 1/3 as slope, reciprocal, I am confused about how to proceed. I know you put variables on one side and constants on other side in standard form.

what is the x-intercept of the perpendicular line?

thanks

- algebra -
**Henry**, Saturday, January 14, 2012 at 8:21pm
I assume the line is perpendicular to

the given line.

y-3 = 3(x+1).

y-3 = 3x+3,

-3x+y = 6,

3x-y = -6.

m1 = -A/B = -3/-1 = 3.

m2 = -1/3 = Negative reciprocal.

P(5,1).

y = mx + b,

y = (-1/3)*5 + b = 1,

b = 1 + 5/3 = 2 2/3 = 8/3.

y = (-1/3)x+8/3,

Convert to STD form:

x/3 + y = 8/3,

X + 3Y = 8.

- algebra -
**Henry**, Saturday, January 14, 2012 at 8:26pm
ADDITION: Let Y = 0 to find X-int.

X + 3Y = 8,

X + 3*0 = 8,

X = 8 = x-int.

- algebra -
**ann**, Saturday, January 14, 2012 at 9:00pm
thank you so much for your help Henry, I really appreciate it. Ann

I understand now where I went wrong. first mistake i made was using positive 1/3 and then it was downhill from there.

## Answer This Question

## Related Questions

- geometry - I would love for someone to check my work on the seven problems that ...
- math - i have more than one question so if u no any of the answers please tell ...
- Algebra - 1.Tell whether the sequence is arithmetic. If it is, what is the ...
- math - pls check!!! - Write an equation in point-slope form for the line that ...
- Geometry - How do I write an equation of a line perpendicular to the graph of -...
- algebra - Write the equation of the line that passes through point (5, 4) with a...
- algebra - given point slope form linear equation to use in answers y-3=3(x+ 1) a...
- Math - Write your answer in standard form. Show all your work if you want to be ...
- Algebra 1 - 1. How many solutions does the linear system have ? 3x - y = 4 -3x...
- math - I have a few question so I will number them off. Please answer them for ...

More Related Questions