Posted by **Confused** on Saturday, May 26, 2007 at 6:30pm.

write the equation of the line which has y-intercept (0,5) and is perpendicular to the line with equation y=-3x +1

a) y=-3x + 5

b) y= 1/3x + 5

c) y= 3x + 5

d) y= -1/3x + 5

The slope of the 2nd equation is -3...because the equation of a line is y=mx+b, where "m" is the slope and b is the y-intercept. So since the slope of the given equation is -3. To get the slope of the line perpendicular to that, you would get the negative reciprocal of -3.

-3 is -3/1. You would flip it to 1/-3 and multiply by -1 to get 1/3 to get your perpendicular slope. And since the y-intercept is (0,5), you only need the y-value, which is 5.

So your equation would be y=1/3x + 5.

## Answer This Question

## Related Questions

- math,correction,&help - Write the equation of the line L satisfying the given ...
- MATH ,CORRECTION - DIRECTIONS ARE. WRITE THE EQUATION OF THE LINE L satisfying ...
- math/algebra1a - write the equation of the line with x-intercept (-7, 0) na d ...
- Math 10 - 1 more question.... how would I make this equation perpendicular? The ...
- math/algebra1a - Write the equation of the line passing through (-3, -5)and (3,0...
- geometry - I would love for someone to check my work on the seven problems that ...
- Algebra 1 - Write an equation in slope-intercept form for a line that passes ...
- Writing this equation - how do I write the equation of a line perpendicular to ...
- calculus - find an equation for the line with the given properties. express the ...
- Math - Please help me understand this question, thanks! 10. Write the slope-...

More Related Questions