Are the lines y = –x – 4 and 5x + 5y = 20 perpendicular? explain.
a.
yes, their slopes are equal.
b.
yes, their slopes have a product of –1.
c.
no, their slopes are not equal.
d.
no, their slopes are not opposite reciprocals.

“ a line segment that has the endpoints on the circle and passes through the midpoint is called the diameter. the diameter is twice the size of the radius. a line segment that has its endpoints on the circular border but does not pass through the midpoint is called a chord. a circle is the same as 360 small circle up the number 0 . i hope this .

b. b < 1 might be the correct answer