Question

take any two points on the line and calculate the slope.
y =-2x + 3

Answer 1

\y = mx + b, m=slope \]

Answer 2

B is the Y intercept

Answer 3

-2 is the slope, it is already indicated

Answer 4

if x=1 then y=1
if x=2 then y=-1
so use the 2 points(1,1) and (2,-1) and the formula for slope is the difference in the yvalues divided by the difference in the x values(taken in the same order of course) and you will get -2 the long way but as you were asked to do.