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4 years ago

Which table represents a function

Mathematics

1 answer:

denpristay [2]4 years ago

4 0

Answer:

The first table

Step-by-step explanation: The x values don't repeat which makes it a function

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Find the equation of the line that is perpendicular to y = 2x + 8 and passes though the point (8, –8).

zloy xaker [14]

Option B: $y=-\frac{1}{2} x-4$ is the equation of the line.

Explanation:

Given that the equation of the line is perpendicular to $y = 2x + 8$ and passes through the point $(8,-8)$

We need to determine the equation of the line.

The equation of the line can be determined using the formula,

$y-y_1=m(x-x_1)$

First, we shall find the value of m.

From the equation $y = 2x + 8$ , the slope is 2.

Since, the lines are perpendicular, the slope is given by

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

Thus, the slope is $m=-\frac{1}{2}$

Substituting the slope $m=-\frac{1}{2}$ and the point $(8,-8)$ in the formula $y-y_1=m(x-x_1)$ , we get,

$y+8=-\frac{1}{2} (x-8)$

Simplifying, we get,

$y+8=-\frac{1}{2} x+4$

Subtracting both sides by 8, we get,

$y=-\frac{1}{2} x-4$

Thus, the equation of the line is $y=-\frac{1}{2} x-4$

Therefore, Option B is the correct answer.

7 0

3 years ago

Can you find the y=mx+b?

harina [27]

Answer:

y=-2x+7

Step-by-step explanation:

Slope is y(2)-y(1)/x(2)-x(1)

I chose (1,5)(0,7) as my two points and got -2 as my slope

Then, I got (0,7) as my y-intercept because it was in the table.

So, the equation is y=-2x+7

(hope this helps :P)

7 0

3 years ago

HELPP

Aliun [14]

Answer:

1 and 4

2 and 3

5 0

3 years ago

Please answer! will give brainliest!!!

GalinKa [24]

Answer:

The answer is the last one

4 0

3 years ago

Read 2 more answers

(8CQ) Find the sum of the geometric series. <br> 20-10+5-5/2+...

Ivahew [28]

Answer:

b. $\frac{40}{3}$

Step-by-step explanation:

The given geometric series is;

$20-10+5-\frac{5}{2}+...$

The first term of this series is

$a_1=20$

The common ratio is

$r=\frac{-10}{20}=-\frac{1}{2}$

The sum to infinity of this series is

$S_{\infty}=\frac{a_1}{1-r}$

Substitute the given values to obtain;

$S_{\infty}=\frac{20}{1--\frac{1}{2}}$

This implies that;

$S_{\infty}=\frac{20}{\frac{3}{2}}$

$S_{\infty}=\frac{40}{3}$

8 0

3 years ago

Read 2 more answers