In an equation, both sides are equal. So, if I say 4x = 8, then 8 must = 4x. If a = b, then b = a. They are equal, and therefore
symmetrical about the equals sign.
The correct answer is B.
if
then
.
1) slope is (8-1)/(4-(-6))=7/10
2) slope is (3-5.2)/(3.25-(-42.25))=-2.2/45.50=-22/455
3) the slope of 1 means the line is inclined to the horizontal axis at an angle of 45 degrees. There are an infinite number of such parallel lines, but only one y=x passes through the origin.
E is your answer becuz y1 - x1 over x2-x1 thats slope=m