What is the slope of the line through(1,−1) and (5,−7)

Mathematics

1 answer:

lana66690 [7]2 years ago

8 0

Answer:

The slope: -3/2

How it looks graph-ed:

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-2x + 3y = 1

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Answer:

-2x+3y =1.......(1)

y=3x-9........(2)

Now,

putting the value of y in equation (1),

-2x+3(3x-9)=1

or,-2x+9x-27=1

or,7x-27=1

or,7x=28

x= 4

Now putting the value of X in equation (2),

y=3×4-9

= 12-9

(x,y)=(4,3)

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A circle has an area of 144л cm2. Find the circumference.

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24cm.........................................

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Mrs. Mitchell decided to grade her projects by giving each student 50 points if they turned in a project and then an additional

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Let $c$ be the amount of parts the student answered correctly. Suppose that $s(c)$ is a function between $c$ and the score of a student's project. As the student initially receives a fixed $50$ points for turning the project in and $5$ points for each correct part, the function is initially:

$s(c) = 5c+50$

When the students receive $7$ points for each correct part, the coefficient of $c$ changes, as the amount of points received per correct answer increases. Thus:

$s(c) = 7c+50$ .