Answer:
B. f(x) = 15/2x - 20
Explanation:
Hi there!
All of the given functions are organized in slope-intercept form:
where m is the slope of the line and b is the y-intercept. The y-intercept is also the value of y where the line crosses the y-axis.
Notice how in the graph, the line crosses the y-axis at y = -20. This means that the y-intercept (b) is -20.
We know now that the answer is either B or D.
In the graph, the line crosses the point (4,10). Let's find f(4) of both the functions given in B and D and see which answer is equal to 10.
Function B:
Therefore, because f(4) is equal to 10 for function B, B is therefore the correct answer.
I hope this helps!