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miv72 [106K]
3 years ago
9

63. Write the slope-intercept form of an equation of the line

Mathematics
2 answers:
Rashid [163]3 years ago
5 0
the slope intercept form is y= -2.3x + 1
wariber [46]3 years ago
4 0

Answer:

y = - \frac{7}{3} x + \frac{5}{3}

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (2, - 3) and (x₂, y₂ ) = (- 1, 4)

m = \frac{4+3}{-1-2} = \frac{7}{-3} = - \frac{7}{3}, thus

y = - \frac{7}{3} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 1, 4), then

4 = \frac{7}{3} + c ⇒ c = 4 - \frac{7}{3} = \frac{5}{3}

y = - \frac{7}{3} x + \frac{5}{3} ← equation of line

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Please plot this linear equation on a graph, and also explain how to plot it. <br> <img src="https://tex.z-dn.net/?f=y%3D3x-7" i
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Answer:

See below:

Step-by-step explanation:

Hello! I hope you are having a nice day.

We can solve this equation in a single step, we just need a bit of theory and a graph.

We can first see that its in y=mx+b form. Which is also known as Slope-Intercept form.

This means that we know the following.

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Since we know that, we can see that from our equation that the slope of the line is 3 and the y intercept is (0,-7).

Now that we've gotten that, we can start graphing.

The y intercept is -7 so we can plot (0,-7) as one of our points.

The slope of 3 means that we got up 3 units then right a single unit.

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With our two points, we can create our graph by creating a straight line through those two points and therefore plotting our line.

Cheers!

6 0
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Nadya [2.5K]

Answer:

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Step-by-step explanation:

First, you need to find what fraction of the original rocks are silver.

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There were 36 space rocks in total.

hope this helps :)

3 0
3 years ago
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