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3 years ago

If the slope of a line is 3 and a point on the line is (-4, 6), then find two other points on the line

Mathematics

2 answers:

kari74 [83]3 years ago

4 0

Y=3x+18
Cause you set up y-y1=m(x-x1) and get y-6=3(x+4) then y-6=3x+12 then y=3x+18

slega [8]3 years ago

3 0

Answer:

trust the other dude cause he is right cause i did the question by looking and i got i right :0

Step-by-step explanation:

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Find the slope of the lines

Svetllana [295]

Answer: -1/2

Step-by-step explanation:

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Run= 2

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3 years ago

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Paha777 [63]

Answer:

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Step-by-step explanation:

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2 years ago

A shop owner spent $540 to purchase a stock of computer keyboards. If the price of each keyboard had been reduced by $2, he coul

AURORKA [14]

Answer:

Price before discount = $20 per keyboard

Price after discount = $18 per keyboard

Before the discount, you can buy 27 keyboards. After the discount, you can buy 30 keyboards.

===============================================

Work Shown:

k = cost of one keyboard before the price reduction

540/k = amount of keyboards purchased before the price reduction

k-2 = cost of one keyboard after the price reduction

540/(k-2) = amount of keyboards purchased after the price reduction

540/(k-2) = (540/k) + 3

--------------

If you multiply both sides by the LCM k(k-2), then you'll clear out the fractions and we can solve for k like so

540/(k-2) = (540/k) + 3

540k = 540(k-2) + 3k(k-2)

540k = 540k - 1080 + 3k^2 - 6k

0 = 540k - 1080 + 3k^2 - 6k - 540k

0 = 3k^2 - 6k - 1080

3k^2 - 6k - 1080 = 0

3(k^2 - 2k - 360) = 0

k^2 - 2k - 360 = 0

(k - 20)(k + 18) = 0

k-20 = 0 or k+18 = 0

k = 20 or k = -18

We ignore the negative result because a negative price doesn't make sense.

--------------

If k = 20, then

540/k = 540/20 = 27

Meaning that you can buy 27 keyboards before the price reduction

In other words, (27 keyboards)*(20 dollars per keyboard) = 540 dollars total.

After the price reduction, the cost per keyboard is now k-2 = 20-2 = 18

We can now buy 540/(k-2) = 540/18 = 30 keyboards, which is an increase of 30-27 = 3 extra keyboards. This helps confirm we have the correct answer.

3 0

3 years ago

Read 2 more answers

Solve problem soon, will give brainliest

suter [353]

Answer:

it is f from the going vertical

8 0

2 years ago

Read 2 more answers

Which equation does the graph of the systems of equations solve? 2 linear graphs. They intersect at 0,3

Rainbow [258]

Answer:

D. $2x+3=-8x+3$

Step-by-step explanation:

We have been given a graph of system of linear equations and we are asked to choose the system of equations representing the given graph.

Upon looking at our graph we can see that our lines intersect at point (0,3). To find the system of equations represented in the graph we will substitute x=0 in our given equations and see which equation gives us an output of 3.

Let us start with 1st option.

A. $-2x+3=8x-3$

Upon substituting x=0 we will get

$-2*0+3=8*0-3$

$0+3=0-3$

$3\neq-3$

Since we get 3 on one side of equation and -3 on other side of equation, therefore, option A is not a correct choice.

B. $-2x+4=-8x+4$

Upon substituting x=0 we will get,

$-2*0+4=-8*0+4$

$0+4=0+4$

$4=4$

Since this system of equations intersect at point (0,4), therefore, option B is not a correct choice as well.

C. $2x+4=8x-4$

Upon substituting x=0 we will get,

$2*0+4=8*0-4$

$0+4=0-4$

$4\neq-4$

Therefore, option C is not a correct choice as well.

D. $2x+3=-8x+3$

Upon substituting x=0 we will get,

$2*0+3=-8*0+3$

$0+3=0+3$

$3=3$

Since this system of equations intersect at point (0,3), therefore, option D is the correct choice.

4 0

3 years ago