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3 years ago

1. What is the slope of the line passing through (-2,3) and (4, -5)?

Mathematics

1 answer:

olganol [36]3 years ago

7 0

Answer:

Step-by-step explanation:

hello :

1) Hello :

let A(-2,3) B(4,-5)

the slope is : (YB - YA)/(XB -XA)

(-5-3)/(4+2) = -8/6 =-4/3

2) Use the point-slope formula.

y - y_1 = m(x - x_1) you have :

m=0 x_1=4 y_1=6

an equation for this line is : y-6 =0(x-4)

so : y=6

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Leona [35]

Answer:

QUESTION:

I need help on this pleaseee...

ANSWER:

2 pairs of pants = $18

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Step-by-step explanation:

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3 years ago

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Solve the system of linear equations by substitution.<br> 2x-y=3<br> x+5y=14

Arturiano [62]

Answer:

x= 29/11 or y= 25/11

Step-by-step explanation:

2x - y= 3 ...........equation 1

x + 5y= 14 ............equation 2

Make x the subject of the formula in equation 2

x= 14 - 5y ..............equation 3

Substitute x=14 - 5y in equation 1

2(14- 5y) - y=3

28 - 10y - y=3

Collect like terms

-10y - y=3 - 28

-11y= -25

divide both sides by coefficient of y

-11y/-11 = -25/-11

y= 25/11

Substitute y= 25/11 in equation 3

x=14 - 5(25/11)

x= 14 - 125/11

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3 years ago

6x^3+ 10x^2 – 4x<br> -<br> I need help with this question

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Answer: 2x(3x−1)(x+2)

Step-by-step explanation:

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3 years ago

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What is an equation of the line that passing through the points (-2, -5) and (4, 7) ?

monitta

Answer:

$y=2x-1$

Step-by-step explanation:

Use the slope-intercept formula: $y=mx+b$ where m is slope and b the y-intercept.

$(-2,-5)(4,7)$

Use the slope formula for when you have two points:

$\frac{y(2)-y(1)}{x(2)-x(1)}=\frac{rise}{run}$

Rise over run is the change in the y-axis over the change in the x-axis. Insert values:

$\frac{7-(-5)}{4-(-2)}$

Simplify parentheses (negative+negative=positive)

$\frac{7+5}{4+2}$

Simplify

$\frac{12}{6}=2$

2 is the slope:

$y=2x+b$

Now use one of the points to find the y-intercept by substituting the x and y values into the equation. Solve for b:

(4,7)

$y=2x+b\\7=2(4)+b$

$7=8+b\\7-8=8-8+b\\7-8=b\\-1=b\\b=-1$

The y-intercept is -1. Insert into the equation. Change the + symbol to -:

$y=2x-1$

Done.

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3 years ago

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The perimeter of a triangle is the sum of its side lengths.

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4 years ago