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3 years ago

Find the equation (in terms of x) of the line through the points (-2,3) and (4,-9) y =

Mathematics

2 answers:

ss7ja [257]3 years ago

6 0

Answer: y = -2x - 1

Step-by-step explanation:

We can calculate the slope from the two given points. Slope is the change in y per the change in x, sometimes called the rise (y) over the run (x)

Rise is (-9 -3) = -12

Run is (4 - (-2)) = 6

Slope = Rise/Run = -12/6 = -2

The line is y = -2x + b

Find b by using either of the two known points (solutions). I'll choose (-2,3) [because I like smaller numbers]

y = -2x + b

3 = -2*(-2) + b

b = -1 [That was only slightly easier than -9 = -2*(4) + b; b = -1]

The equation is y = -2x - 1

shepuryov [24]3 years ago

3 0

Answer:

y =5

Step-by-step explanation:

−9−7

5−5

−16

y=mx+b

5=(0)(7)+b

b=5

therefore y = 5

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3 years ago

Kate had a sum of money,she spent 1/8 of the money on a skirt and the remaining amount on a handbag,the skirt cost $16,how much

tiny-mole [99]

Answer:

$18.28

Step-by-step explanation:

Step one:

given data

Kate had a sum of money,she spent 1/8 of the money on a skirt and the remaining amount on a handbag

let the total money be x

so mathematically

x-1/8*x= 16

solve for x

x-x/8= 16

8x-x/8= 16

7x/8=16

cross multiply

7x= 8*16

7x=128

divide both sides by 7

x=128/7

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3 years ago

Two angles are supplementary. The larger angle is 15 more than 10 times the smaller angle. FInd the measure of each angle.

garik1379 [7]

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qwelly [4]

That's correct but whats your question?

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bagirrra123 [75]

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