Know Your Keywords — Math, Advanced
Point 5 — Exponential functions — equations & displayed as constant
What do we see?
“Which of the following equations displays, as a constant or coefficient, the maximum value / minimum value / x-intercept …”, or an equation written in terms of f(n) and f(n−1).
What do we understand?
Find the requested value first, then see which option actually shows it. When the equation is in terms of f(n) and f(n − 1), solve it like a simple variable equation.
Question 1 of 7
The function f is defined by f(x) = a(3.1x + 3.1b), where a and b are integer constants and 0 < a < b. The functions g and h are equivalent to function f, where k and m are constants. Which of the following equations displays the y-coordinate of the y-intercept of the graph of y = f(x) in the xy-plane as a constant or coefficient?
I. g(x) = a(3.1x + k)
II. h(x) = a(3.1)x + m