1st graph = -1/2
2nd graph = 3
3rd graph = 3/2
Use rise over run! Start with a point on the graph. Count upwards to find the y-axis point. Then count left or right to find the other point.
on the 1st graph, start with point (4,-1) then move UP one point at a time until you find another point that hits in between a whole number! In this case, you need to go up ONCE. Next step, you need to find what direction the line goes! If the line is on the right then count towards the right (meaning it’s a POSITIVE SLOPE) if it’s on the left count towards the left (meaning it’s a NEGATIVE SLOPE)!! As we count up one time, the line is on the left side! So it’s a negative slope! There also another way to identify positive and negative slopes which is explained on the next paragraph! So now that we moved up one to point (4,0) we need to go left until where the line crosses! So you only need to move 2 times to the left until it hits the line! So keep in mind that we move UP 1 time and we moved LEFT 2 times. Remember the formula RISE/RUN!! The rise is POSITIVE 1 and the run is NEGATIVE 2! -1/2 is the answer for the first graph!
Another way to identify whether the slope is negative or not is deciding which side the line seems to start (left or right?) if it starts from the left side it’s positive. if it starts from the right it’s negative! In graph number 2 the line starts off from the left side so it’s…POSITIVE! use any of these ways to tell whether a slope is negative or positive!
Hope this makes sense!