If g(x) = 5, what is the value of x?

[grinboy1]

For some reason I am drawing a blank on number 2 in the pic here: "If g(x) =5, what is the value of x? What does it mean in context to the problem?

 

[stapel]

For some reason I am drawing a blank on number 2 in the pic here: "If g(x) =5, what is the value of x? What does it mean in context to the problem?

Keep in mind that "g(x)" is just a fancy name for "y". So this question is asking, "When y = 5, what is the corresponding value of x?" They use the name "g(x)" for this question because otherwise you wouldn't know which line they meant.

 

[grinboy1]

Thanks - That was what I thought.

Keep in mind that "g(x)" is just a fancy name for "y". So this question is asking, "When y = 5, what is the corresponding value of x?" They use the name "g(x)" for this question because otherwise you wouldn't know which line they meant.

 

[grinboy1]

So on the graph, we go to the point in the line g(x) that corresponds to X when g(x) = 5 (5 on y axis).

Would x then equal 1.5?

 

[hoosie]

So on the graph, we go to the point in the line g(x) that corresponds to X when g(x) = 5 (5 on y axis).

Would x then equal 1.5?

You are correct Grinboy - g(1.5) = 5 from your graph where y = g(x) is a function.
When x = 1.5, y = 5

What do you think this means in the context of this problem?
Hint:
g(x) represents cost of travel in red taxi
What does x represent?
How much does it cost for the red taxi to travel 1.5 miles?