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3 years ago

Graph the linear equation to -2x+7y=-21

Mathematics

2 answers:

mr Goodwill [35]3 years ago

8 0

Answer:

This equation is in standard form, so to make graphing easier you need to put it in y=mx+b form or slope, intercept form.

Step-by-step explanation:

I have attached a photo of what the graph would look like.

However, in the future you should know how to turn this into a slope intercept equation.

-2x+7y=-21

+2x +2x

7y=2x-21

divide the entire equation by 7

y= 2/7x-3

That is a full equation in slope intercept form.

Hopefully this helps!

Maru [420]3 years ago

7 0

Your points should be (0,-3),(21/2,0) and the slope is 2/7 so just go up 2 units from each point and 7 to the right.

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1 year ago

Solve the expression using pemdas (4+5)÷3×4

Dennis_Churaev [7]

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3 years ago

Read 2 more answers

2/3 b + 5 =20 - b solve for b

Wittaler [7]

Answer:

$b = 9$

Step-by-step explanation:

$\frac{2}{3} b + 5 = 20 - b$

In order to solve for b, we must isolate the variable. We can start by subtracting 5 from both sides.

$\frac{2}{3} b + 5 - 5 = 20 - b - 5$

Simplify.

$\frac{2}{3} b = 15 - b$

Add b to both sides.

$\frac{2}{3} b + b = 15 - b + b$

Simplify.

$\frac{2}{3} b + b = 15$

Multiply everything by 3 to remove the fractions.

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2 years ago

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3 years ago

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irinina [24]

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