Please help and explain. I am very confused and frustrated.

Answer:
y = 3/4
Step-by-step explanation:
The slope of the graph is the gradient.
In a straight line, to attain the slope you have to use any two points in the graph.
So I will use (0,2) and (4,5)
[tex]m \: = \: \frac{delta \: y}{delta \: x} \\ m \: = \frac{2 - 5}{0 - 4} \\ m \: = \: \frac{ - 3}{ - 4} = \frac{3}{4} [/tex]
Hopefully this makes sense
:)