Question

The function g is defined by g(x)=ax−7, where a is a constant. Find a, if the graph of g passes through the point ( 1/3,−2).

Answer 1

the answer is a=15 becuase you can substitute for the equation.

Answer 2

a = 15

Explanation:

g(x) is the same thing as "y". Our point gives us an x and y value, so we will sub those into the equation and solve for a:

-2 = a(1/3) - 7 and

-2 = 1/3a - 7 and

5 = 1/3a so

a = 15