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2 years ago

What is the slope between the points (8, -2) and (-7, 10)

1 answer:

8 0

Slope formula:
(y2-y1)/(x2-x1)

Substitute in the points into the slope formula.

Slope= [10-(-2)] / [(-7)-8]
Slope= (10+2) / (-15)
Slope= 12/-15
Slope= -12/15
Simplify (3 goes into each)
Slope= -4/5

Hope this helps!! :)

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If a line with a slope of -2 crosses the y-axis at (0, 3), what is the equation of the line?

Karo-lina-s [1.5K]

Answer: Option D

$y +2x = 3$

Step-by-step explanation:

The equation of a line in the form of "slope-interception" has the following form:

$y = mx + b$

Where m is the slope of the line and b is the interception of the line with the y axis.

In this case we know that the line has a slope of -2. Then $m = -2$ .

We also know that the line intercepts the axis y at the point (0, 3) therefore we know that:

$b = 3$ .

Finally the equation of the line will be:

$y = -2x + 3$

If we add 2x on both sides of the equation we get:

$y +2x = 3$

The answer is the option D

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3 years ago

I'LL GIVE BRAINLIST Select all the rates that are unit rates.

Alex Ar [27]

Answer:

B and D

Step-by-step explanation:

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2 years ago

Using the distributive property to find the product (y – 4)(y2 + 4y + 16) results in a polynomial of the form y3 + 4y2 + ay – 4y

Crank

Answer:

The answer to your question is a = 16

Step-by-step explanation:

Polynomial

(y - 4) (y² + 4y + 16)

Process

1.- Multiply y by each term of the polynomial

y(y² + 4y + 16) = y³ + 4y² + 16y

2.- Multiply -4 by each term of the polynomial

-4(y² + 4y + 16) = -4y² - 16y - 64

3.- Write both results

y³ + 4y² + 16y - 4y² - 16y - 64

In bold we notice that a = 16

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3 years ago

What is 674×673×142÷3

anzhelika [568]

Step-by-step explanation:

$674 \times 673 \times 142 \div 3 \\ \\ = 674 \times 673 \times 142 \times \frac{1}{3} \\ \\ = 64,411,484\times \frac{1}{3} \\ \\ = 21,470,494.7 \\$

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3 years ago

An ice cream store uses 1/5 of a box of ice cream cones everyday. If they have 8 boxes, how many days will they last? Write the

Ad libitum [116K]

Answer:

1.6 days (1 3/5 for simplified form).

Step-by-step explanation:

Given equation:

1/5 * 8

We know that a box survives 1/5 a day.

1/5 * 8 = 1 3/5

It will survive 1 3/5 a day in 8 boxes.

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2 years ago