I don't think there is a value of y because 2.5 is a straight line.
Answer:
<h2>y = 3/4x + 5</h2>
Step-by-step explanation:
The slope-intercept form:

m - slope
b - y-intercept → (0, b)
The formula of a slope:

We have the points (4, 8) and (0, 5) → b = 5.
Calculate the slope:

Therefore we have the equation of the line:

Step-by-step explanation:
1/5x-12=0
1/75-12=0
1-900=-899/75
ans=11.99
I wouldn't use the phrase "extends from." If the leading coeff. is neg, then the graph opens downward. Without more info we do not know the max of this fn. If we did know it, we could state that the graph max is (value) and that the graph "extends downward from this value."