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3 years ago

Graph the line that passes through the points (9, -9) and (9,−4) and determine the equation of the line.

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

8 0

Answer:

x = 9

Step-by-step explanation:

Since both points share the same x-coordinate, look no further.

It has to be a vertical line with x-coordinate 9.

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Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for

yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the ordered pairs

(100,54) and (660, 138)

substitute

$m=\frac{138-54}{660-100}$

$m=\frac{84}{560}=\$0.15\ per\ minute$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=0.15\\point\ (100,54)$

substitute

$y-54=0.15(x-100)$

step 3

Convert to slope intercept form

Isolate the variable y

$y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39$

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

6 0

3 years ago

Find the x and y intercept for -2x-5y=30

Ahat [919]

Answer:

see below

Step-by-step explanation:

-2x-5y=30

To find the x intercept, set y =0 and solve for x

-2x-5*0=30

-2x = 30

Divide each side by -2

-2x/-2 = 30/-2

x =-15

To find the y intercept, set x =0 and solve for y

-2*0-5y=30

-5y = 30

Divide each side by -5

-5y/-5 = 30/-5

y = -6

3 0

3 years ago

Read 2 more answers

Plz help me quickly I’ll give brainlist

Svetlanka [38]

Answer:

$5\frac{5}{6}$

Step-by-step explanation:

3 1/2 x 1 2/3 = 35/6

6 x 5 + 5 = 35/6

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3 years ago

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2 years ago

A candle is 6 inches tall and burns at a rate of 1/2 inch per hour. If the candle is now 3.5 inches, how many hours has it been

nikitadnepr [17]

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3 years ago