2 years ago

How do you know that substitution gives the answer to a system of equations?

Mathematics

1 answer:

Cerrena [4.2K]2 years ago

3 0

It gives the answer to a system of equations because it explains it

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InWrite the equation of the line that passes through (7, - 4) and (- 1, 2) slope- intercept form.

blondinia [14]

Answer:

General Equation of a Line

$General Equation \\(y - y_{1} )= m (x-x_{1}) \\Slope=m= \frac{x_{2}-x_{1} }{y_{2}-y_{1} } \\\\Given:\\p_{1}=(7,-4)\\p_{2}=(-1,2)\\Solution:\\m=(\frac{-1-7}{2-(-4)}) =\frac{-8}{6}\\y-(-4) = (\frac{-8}{6} )(x-7)\\y+4=\frac{-8x}{6} + 56\\y=\frac{-8x}{6} + 52 \\\\The\\ equation \\ is \\ y=\frac{-8x}{6} + 52$

Step-by-step explanation:

Find the slope first and then place the values on the general formula. The final step is to solve for y

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2 years ago

Choose the equation and the slope of the line that passes trough (5,-3) and is parallel to the x-axis

lesya [120]

Answer:

y = -3

Step-by-step explanation:

Parallel to the x axis means that it is a horizontal line

It is of the form y =

Given the point ( 5, -3)

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y = -3

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2 years ago

Which of these is the algebraic expression for "3 times the sum of 2 and y?"

11111nata11111 [884]

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2 years ago

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Hoochie [10]

Answer:

Step-by-step explanation:

he triangle is isosceles.

The leg-to-hypotenuse ratio is 1:StartRoot 2 EndRoot.

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3 yards per quilt

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3 years ago

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