## anonymous 5 years ago determine weather each pair of equations represents perpendicular lines. show work y= -x+7 y -x =3

1. anonymous

what can you tell me about conditions for two lines to be perpendicular to each other?

2. anonymous

perpendicular means $m_{1}=-\frac{1}{m_2}$

3. anonymous

y=mx+c m=-1, m=1 so for perpndicular m1*m2= -1 here the condition satisfied

4. anonymous

find the gradients of both the equations and if the gradient of one equation is the negative reciprocal of the other equations, then they are perpendicular

5. anonymous

first line has slope -1, second has slope 1, so perpendicular.

6. anonymous

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