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3 years ago

What is the slope of this line

Mathematics

2 answers:

Nostrana [21]3 years ago

3 0

Answer:

m=-3/4

Step-by-step explanation:

First locate two points that are on solid intersections, (-3, 2) and (1, -1).

y2-y1

Then use x2-x1' where -1 is y2, 2 is y1, 1 is x2, and -3 is x1.

Plug in numbers, -1-2 = -3

1+3 = 4

-3/4 is m (Slope).

lutik1710 [3]3 years ago

3 0

You need 2 points to find slope

Line coordinates (-3,2) (1,-1)

Slope = (-1-2)/(1 +3)

= -3/4

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Answer:

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3 years ago

Read 2 more answers

M is a directly proportional to r cubed when r=4 M=160

Paraphin [41]

Answer:

1) When r = 2, M = 20.

2) When M = 540, r = 6.

Step-by-step explanation:

M is a directly proportional to r cubed

This means that the equation for M has the following format:

$M = ar^3$

In which a is a multiplier.

When r=4 M=160.

We use this to find a. So

$M = ar^3$

$160 = a(4^3)$

$64a = 160$

$a = \frac{160}{64}$

$a = 2.5$

$M = 2.5r^3$

1) work out the value of M when r=2

$M = 2.5*2^3 = 2.5*8 = 20$

When r = 2, M = 20.

2) work out the value of r when M=540

$M = 2.5r^3$

$540 = 2.5r^3$

$r^3 = \frac{540}{2.5}$

$r^3 = 216$

$r = \sqrt[3]{216}$

$r = 6$

When M = 540, r = 6.

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