Which equations represent functions?

Mathematics

2 answers:

Alla [95]3 years ago

7 0

A is not a function. It is a sideways parabola.
B is a function. It is a line.
C is not a function
D is a function. It is a parabola.
ANSWER: B & D

garik1379 [7]3 years ago

4 0

Hello,
B, C, and D are the correct answers. Option D is the parent function of a parabola which is a function (it passes the vertical line test). Option C is also a parabola (shifted a unit to the right) and Option B is a linear graph which is a function. Option A doesn't pass the vertical line test and therefore isn't a function. I attached an image in case you weren't sure what the vertical line test is. Hope this helps!

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F(x)=(1÷4)^x Is it and Incease,decrease or constant

Fynjy0 [20]

Answer:

Decrease

Step-by-step explanation:

The general form of exponential functions is $a$ · $b^x^-^h +k$ . If $b$ , or the base with the exponent, is bigger than 1, than the graph increases, experiencing growth. If the base is somewhere between 0 and 1, then the graph decreases, experiencing decay.