step-by-step explanation:
let
we know that
the y-intercept is the y-coordinate of the point when the value of x is equal to zero
so
the y-coordinate of the point a is the y-intercept
the answer part a) is
the value of y-intercept is
part b) find the slope m
we know that
the value of the slope is equal to
substitute the values
therefore
the answer part b) is
the value of the slope is equal to
the general answer is
the slope is
the value of y-intercept is