Algebra 1 question please help

Mathematics

1 answer:

Sonja [21]3 years ago

7 0

Answer:

y-intercept = 5
common ratio = 1/2

Step-by-step explanation:

The y-intercept and the common ratio of an exponential function can be read from the equation. The form of the equation is ...

y = a·b^x

where 'a' is the y-intercept, and 'b' is the common ratio.

You have ...

y = 5·(1/2)^x

Comparing this to the above form, you can see that ...

y-intercept = 5

common ratio = 1/2

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Suppose that y varies directly with x and y=10 when x=-20. What is y when x =15?

USPshnik [31]

Answer:

15/2

Step-by-step explanation:

You want to first find the connection between the first statement, y=10 and x=20. The connection is that Y is X divided by 2. Then you want to just do the same equation to the y and keep it a fraction. (Hint. a fraction is the same as what you do to divide, its just the equation before you find your answer.) so your answer is 15/2.

Hope its right, and i hope this helped.

8 0

2 years ago

Show how you did it

tankabanditka [31]

Answer:

7 3/5

Step-by-step explanation:

$6 \times \frac{8}{5} = \frac{38}{5} = 7 \times \frac{3}{5}$