2.4.A.1Concept
The product property for exponents states that bmbn = bm+n. Graphically, this property implies that every horizontal translation of an exponential function, f(x) = bx+k, is equivalent to a vertical dilation, f(x) = bx+k = bxbk = abx, where a = bk.
ExampleShift left 3 = stretch by 81 / 3
Rewrite f(x) = 2x+3 in the form abx, then check the two forms at x = 2.
Try it on paper first, then reveal each step to check your work.
Step 1 — Split the exponent
Use the product property backward: 2x+3 = 2x·23.