We have been given that on a coordinate plane a line with negative slope passes through points $(0,1)$ and $(1,-1)$ . We are asked to find the rate of the change of the function.

We know that slope represents rate of change of function.

We will use slope formula to solve our given problem.

$m=\frac{y_2-y_1}{x_2-x_1}$

Let $(x_1,y_1)=(0,1)$ and $(x_2,y_2)=(1,-1)$ .

$m=\frac{-1-1}{1-0}$

$m=\frac{-2}{1}$

$m=-2$

Therefore, the rate of change of the given function is $-2$ .

8 0

3 years ago

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chelsea deposits $600 into a bank account and is earning simple interest.After 4 years her account has a balance of $621.60.If C

olga nikolaevna [1]

If she deposited $600 and had $621.60 after four years, then she earned: $621.60 - $600 = $21.60 in four years. It means in one year she earned $21.60 ÷ 4 = $5.40. Now we have to find out how many percent of $600 is $5.40:

$5.40 = x% from $600
5.4 = x/100 * 600
5.4 = 600x/100 / * 100 (both sides)
540 = 600x / ÷ 600 (both sides)
x = 0.9

So the interest rate was 0.9% annually.

Now we have to find out how much is 0.9% from $1100:

$1100 * 0.9% =
= 1100 * 9/1009 =
= 9900/1000 =
= 9.9

It means in one year she would earn $9.90. After 7 years she would earn $9.90 * 7 = $69.30, so she would have in her account:

$1100 + $69.30 = <u>$1169.30</u>

8 0

4 years ago

What is the perimeter of the rectangle?

UkoKoshka [18]

B. Because 5 t 5 t 4 t 4 equals 18

6 0

3 years ago

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Please help me with number 22 and if you can part b to please

m_a_m_a [10]

It's not a good picture.it's not possible to read it

6 0

4 years ago