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3 years ago

Graph the linear equation with 3 points

Mathematics

1 answer:

barxatty [35]3 years ago

3 0

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

$x-y=1$

To graph the line find the intercepts

step 1

Find the y-intercept (value of y when the value of x is equal to zero)

For x=0

substitute in the linear equation

$0-y=1\\y=-1$

The y-intercept is the point (0,-1)

step 2

Find the x-intercept (value of x when the value of y is equal to zero)

For y=0

substitute in the linear equation

$x-0=1\\x=1$

The x-intercept is the point (1,0)

step 3

Find a third point

Note: It is important to specify that two points are sufficient to draw a line

assume the value of x=5

substitute in the linear equation and solve by y

$5-y=1\\y=5-1\\y=4$

The third point is (5,4)

step 4

Plot the points and connect them to graph the line

see the attached figure

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3 years ago

Can someone please help??? WILL MARK BRAINLIEST

olya-2409 [2.1K]

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

To find the slope, you can use the slope formula and plug in the two points:

(3,63) = (x₁ , y₁)

(5,107) = (x₂, y₂)

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m=\frac{107-63}{5-3}$

$m=\frac{44}{2}$

m = 22

Now that you know m = 22, plug it into the equation:

y = mx + b

y = 22x + b

To find "b", plug in one of the points into the equation (I will do both points)

(3,63)

y = 22x + b

63 = 22(3) + b

63 = 66 + b Subtract 66 on both sides

-3 = b

(5,107)

y = 22x + b

107 = 22(5) + b

107 = 110 + b Subtract 110 on both sides

-3 = b

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3 years ago

How do I find the Q1 and Q3? 0,0,1,2,2,3,4,4,4,4,5,6,6,7,7

Angelina_Jolie [31]

Answer:

Q1 = 2

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Step-by-step explanation:

Mathematically, we have

Q1 = (n + 1)/4 th term

where n is the number of terms

By the count, we have n as 15

Q1 = (15 + 1)/4

Q1 = 4th term

Looking at the arrangement, the 4th term is 2

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Q3 = 3(n + 1)/4 th term

n = 15

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Answer:

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Step-by-step explanation:

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Zoe is a salesperson who sells computers at an electronics store. She is paid a 1% commission for every computer sale she makes,

ella [17]

Given:

Zoe gets paid a 1% commission for every sale she makes in addition to base pay.

She sold $8,000 worth of computers on a day and made $140 that day.

To find:

A function P(x) representing total pay on a day where she sells x dollars worth of computers.

Solution:

To determine the function P(x) we need to determine how much Zoe's base pay per day is.

One day, she sold $8,000 worth of computers and made $140 that day.

She gets a commission of 1% for $8,000.

1% of $8,000 $= \frac{1}{100} (8,000) = 80.$

So she got paid $140 out of which $80 was a commission.

So her base pay $= 140-80 = 60.$

So Zoe's base pay is $60 a day.

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