Monday

January 26, 2015

January 26, 2015

Posted by **Lisa** on Saturday, September 5, 2009 at 11:50pm.

y = 9x + 9 and y = -9x + 9

Is this perpendicular since they go across from each other

- Algebra -
**drwls**, Saturday, September 5, 2009 at 11:53pmThe answer is neither. For the lines to be perpendicular, the product of the slopes, which are coefficients of the "x" terms, must be -1. In this case the product is -81.

**Answer this Question**

**Related Questions**

Plz Check My Geometry - Out of 30 questions these few I struggled with. I put ...

Plz Check My Geometry - Out of 30 questions these few I struggled with. I put ...

Plz Check my Geometry(sOo0n) - 1.) Given points A(-4, 5), B(2, 3), C(0, 4) and D...

algebra - give the slop of each line and then determine whether two lines are ...

Math. - Determine whether the lines are parallel, perpendicular, or neither. # 1...

math help please - Tell whether the lines for each pair of equations are ...

Math - Determine whether the lines are parallel, perpendicular or neither: y+x...

math help please - Tell whether the lines for each pair of equations are ...

math help please - Tell whether the lines for each pair of equations are ...

algebra - the line "l" passes through the point P=(1,-1,1) and has a direction ...