Question

The graph of y = -3x + 2 intersects the graph of an exponential function at (-1, 5). Which of the following could be the exponential function? y = 10(2)x y = 10(0.5)x y = 5x y = 5(2)x

Answer 1

y=10(2)ˣ

Explanation:

Answer 2

one way is to subsitute the point (-1,5) for every function and see which one gives a true statement

5=10(2)^(-1) is true

5=10(0.5)^-1 is false

5=5(-1) is false

5=5(2)^-1 is false



answer is y=10(2)ˣ