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Scrat [10]
3 years ago
7

Solving and graphing systems of equations

Mathematics
1 answer:
dusya [7]3 years ago
3 0
Hey Jackson!

-4x + 3y = 3
y = 2x + 1

Ok so what we need to do is solving y= 2x + 1 for y.

So let's start by using the substitution method :)

Substitute 2x + 1 for y in -4x + 3y = 3

-4x+ 3y = 3

-4x + 3(2x + 1) = 3

-4x + (3)(2x) + (3)(1) = 3

-4x + 6x + 3 = 3

2x + 3 = 3

Subtract 3 on both sides

2x + 3 - 3 = 3 - 3

2x = 0

x = 0/2

x = 0

So now since we find the number for x, we gonna use it to help us find the value for y.

To find y, we need to substitute 0 for x in y = 2x + 1

y = 2x + 1

y = 2(0) + 1

y = 0 + 1

y = 1

Thus,

The answer is: y = 1 and x = 0

How to graph?

You need to go on the thing where they put the numbers. y is located on top which has the positive numbers. So when you get there, make a line that comes from the top right side all the way to the bottom left sides. Remember that y = 1 so the line must pass through 1

I am not good with explanation. So I'll leave the graph down below then you'll see what I am talking about :)

Let me know if you have any questions. As always, it is my pleasure to help students like you!


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Dmitry_Shevchenko [17]

Answer:

Step-by-step explanation:

To calculate the speed of each one we proceed as follows:

speed=distance/time

a] Noah's speed:

distance=2.5 miles

time=3/5 hours

speed=(2 1/2)/(3/5)

=(5/2)/(3/5)

=5/2×5/3

=25/6

=4 1/6 mi/hr

Emily's speed

distance=3 3/4 miles

time=5/6 hour

thus

speed=(3 3/4)/(5/6)

=15/4)/(5/6)

=15/4×6/5

=4 1/2 mi/hr

Anna's speed:

distance=3 1/3 miles

time=3/5

speed=(3 1/3)/(3/5

=(10/3)/(3/5)

=10/3×5/3

=5 5/9 mi/hr

Anna was the fastest

6 0
3 years ago
Read 2 more answers
Verify whether the indicated numbers are zeroes of their corresponding polynomials.
Mashcka [7]

Answer:

  • No, incorrect

Step-by-step explanation:

<u>Given</u>

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<u>Verifying zeroes</u>

Q(-4) =

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  • Incorrect as 344 ≠ 0

Q(1) =

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  • Incorrect as -29 ≠ 0

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3 years ago
Mithali buys a t.v at 12,000 and sells it at a profit of 20% how much money she gets? reduce the fraction of cp and sp to the lo
Dominik [7]

Answer:

14,400

Step-by-step explanation:

Hope this helpfull..but if it's not,im so sorry

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Gekata [30.6K]

Answer:

desmos .com

Step-by-step explanation:

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3 years ago
Please help me out!​
gavmur [86]

Answer:

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Step-by-step explanation:

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