Problem 263
The graph of an equation in the from y = mx + b is a straight line. Can the equation of every straight line be written in the from y = mx + b ?
(Hint: What is the equation of a vertical line?)
Solution
every straight line which have slope greater than zero
be written in the form y=mx+b
there two other case
one is horizontal line
(y=b)and second is
vertical line (x=a)
which are not written in the form of y=mx+b