Question

Which equation matches this graph is y if Y is a gallons of water are used in X in minutes​?

Answer 1

option 4

Explanation:

Take any point on the graph different from (0, 0). For example, (2, 10) and se which function verifies:

y = 10x ----> 10 = 10*2 = 20 so NOT

y = 1/5x ----> 10 = (1/5)*2 = 2/5 so NOT

y = 2x ----> 10 = 2*2 = 4 ----> so NOT

y = 5x ----> 10 = 2*5 = 10 -----> YES!!

So, f(x) = 5x verifies and matches the graph