Algebra
posted by Lisa .
Determine whether the lines are parallel, perpendicular, or neither.
y = 9x + 9 and y = 9x + 9
Is this perpendicular since they go across from each other

The 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.
Respond to this Question
Similar Questions

Math
Determine whether the lines are parallel, perpendicular or neither: y+x= 2 and yx= 2. My answer is : Perpendicular Is this correct? 
Plz Check My Geometry
Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i think … 
Plz Check My Geometry
Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i think … 
Plz Check my Geometry(sOo0n)
1.) Given points A(4, 5), B(2, 3), C(0, 4) and D(5, 0), decide if AB and CD are parallel, perpendicular or neither. =Neither 2.)Given the equations y = 1x + 7 and y = 3x  2, decide whether the lines are parallel, perpendicular or … 
Math.
Determine whether the lines are parallel, perpendicular, or neither. # 1) y = 5( 4x + 9) and y =  1/20x  4 A) Parallel B) Perpendicular C) Neither #2) y = 9x + 9 and y = 9x + 9 A) Parallel B) Perpendicular C) Neither 
math help please
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. x + 5y = –20 y = –7/8x – 1 and 32x – 28y = –36 parallel perpendicular neither I think its neither? 
math help please
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. x + 5y = –20 y = –7/8x – 1 32x – 28y = –36 parallel perpendicular neither I think it's perpendicular  asked this question earlier … 
algebra
give the slop of each line and then determine whether two lines are parallel, perpendicular, or neither parallel nor perpendicular. 2x+5y=5, 4x+10y=0 
Algebra
Correct me if I'm wrong please 1. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. y = –2x + 4 –5x + 10y = 5 (1 point) A.parallel B.perpendicular * C.neither 2. Tell whether the lines for … 
math
Determine whether the lines y=8x5 and y=(2÷16)x3 are parallel or perpendicular or neither parallel nor perpendicular.