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3 years ago

10

Write the equation of the line that passes through the points (2,−8) and (1,7). Put your answer in fully reduced point-slope for

m.

1 answer:

Alex17521 [72]3 years ago

6 0

Answer:

y = -15 + 22

Step-by-step explanation:

slope (m):

(y1 - y2)/(x1 - x2)

7 - (-8) / 1 - 2

15 / -1

m = -15

point slope formula:

y - y1 = -15(x - x1)

y - 7 = -15(x - 1)

y - 7 = -15x + 15

y = -15x + 22

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Tcecarenko [31]

Answer:

<em>(3). 500; (4) 60</em>

Step-by-step explanation:

5 0

2 years ago

Solve the system of equations using multiplication. 3x – 3y = –3 5x – y = –13 What is the solution of the system?

love history [14]

ANSWER

The solution is

x=-3,y=-2

EXPLANATION

First equation

3x – 3y = –3

Second Equation:

5x – y = –13

Multiply the second equation by 3 to get:

Third equation:

15x-3y=-39

Subtract the first equation from the third equation:

$15x - 3x = - 39 - - 3$

$12x = - 36$

Divide both sides by 12,

$x = \frac{ - 36}{12} = - 3$

Put x=-3 into the first equation:

$3( - 3) - 3y = - 3$

$- 9 - 3y = - 3$

Group like terms,

$- 3y = - 3 + 9$

$- 3y = 6$

$y = - 2$

The solution is

x=-3,y=-2

6 0

3 years ago

Grouping symbols are missing in the expression below.The expression needs to have a value of 84 when simplifide. 8×2+3+6-2 use 2

Vesnalui [34]

Multiply the equations by 2 and then subtitude,

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3 years ago

Which parallelogram has an area of 60 square units? Select the correct

faust18 [17]

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3 years ago

Without using trignometery tables find value of , cos70/sin20+cos57.cosec33 - 2cos60

Helen [10]

Here is some thoughts on this:

cos 57 = sin (90-57) = sin 33

so cos 57 . cosec 33 = cos 57 / sin 33 = sin 33 / sin33 = 1

2 cos 60 = 2 * 1/2 = 1

so the last 2 parts work out to 0

now we have to find cos 70 / sin 20

sin 20 = cos 70 so this comes to 1

so finally the answer is 1

4 0

3 years ago