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dedylja [7]
2 years ago
15

Solve the system by substitution.

Mathematics
1 answer:
Iteru [2.4K]2 years ago
3 0

Answer:

I gave you most of the answer. I'll let you check my work and find the point using the solution.

Step-by-step explanation:

The first thing we do is we divide by negative one in the first equation to get

y = -x.

-3x + 3y = -36

Plug in y = -x and get

-3x + 3(-x) = -36

= -3x - 3x = -36

This equals -6x = -36

divide both sides by -6 and you get 6. 6 is your x value

Plug 6 back in to the second equation.

-3x + 3y = -36

-3(6) + 3y = -36

-18 + 3y = -36

3y = -18

y = -6

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A line has a slope of 2. It passes through the points (1, 2) and (3, y) . What is the value of y? y=
malfutka [58]

Answer:

6

Step-by-step explanation:

To solve this , we use the equation of finding a slope wig a line.

m = (y2 - y1)/(x2 - x1)

From the question, we know that:

y2 = y

x2 = 3

y1 = 2

x1 = 1

m = 2

Hence,

2= (y - 2)/(3 - 1)

2 = (y - 2)/2

4 = y - 2

y = 2 + 4 = 6

4 0
3 years ago
Linda is training to be an assistant at the local animal shelter. To become an assistant she needs to complete 48 h of training.
aleksandrvk [35]

The equation between the number of days remaining and number of hours is given as y= -5x+50.

<h3>How to illustrate the equation?</h3>

Let y be the number of days remaining and x be the no.of hours.

From the graph the slope of the line is given by m.

m=(y2 - y1)/(x2 - x1)

m=(30 - 40)/(4 - 2)

m= -10/2 = -5.

The above slope is in between points 2 and 4. As the line has a constant rate of growth the slope is the same between any points of the line.

Therefore the equation between the no.of days remaining and no.of hours is given by

y=mx +c.

y=-5x+c

Now to find the value of c. This can be determined by substituting the x and y values at a particular instant. For x=0,y=50. Therefore by these values, we get,

50= -5(0)+c

c=50.

Therefore the relation between the number of days remaining and number of hours is given as y= -5x+50.

Learn more about equations on:

brainly.com/question/2972832

#SPJ1

3 0
2 years ago
Which number is between 0.5 and 5/8<br><br> A) 1/4<br><br> B) 8/28<br><br> C) 9/16<br><br> D) 19/28
Andru [333]
I think a but not sure but i hope i helped :D
8 0
3 years ago
Read 2 more answers
Help me please
Nimfa-mama [501]
They are both in standard form.
7 0
3 years ago
What two numbers add to +5 and have a product of -3?
Tasya [4]
They don't come out even.
As rounded decimals, the two numbers are

<em>5.54138...</em>  and  <em>-0.54138...</em>


6 0
3 years ago
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