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juin [17]
3 years ago
12

How do you solve 7x+2y=2, x-2y=14

Mathematics
1 answer:
professor190 [17]3 years ago
7 0
First you isolate x in the equation x-2y=14 and substitute. So the equation should be x= 2y+14. You plug this equation into the x of 7x on the other problem and solve. Your final equation should now be 7(2y+14)+2y=2. Now distribute the 7 into (2y+14) to get 14y+98 +2y=2. Next, just add up the variables and solve to get 16y=-96. Divide -96 by 16 to get your final answer of y=-6.
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Find the equation of the line in slope-intercept form containing the points (4,6) and (9,16).
inna [77]

Hello!

Slope-intercept form is y = mx + b. In this form, m is the slope and y is the y-intercept.

To find the slope, we need to use the slope formula. The slope formula is: \frac{y_{2}-y_{1} }{x_{2}-x_{1}}. We can assign the point (4, 6) to x_{1} and y_{1} and (9, 16) to x_{2} and y_{2}.

Now, we can find the slope: \frac{16-6}{9-4} = \frac{10}{5} = 2

Next, we can find the y-intercept by substituting a point into the slope-intercept form with the slope as 2.

y = 2x + b (substitute a given point)

6 = 2(4) + b (simplify)

6 = 8 + b (subtract 8 from both sides)

-2 = b

Therefore, the equation of the line is y = 2x - 2.

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3 years ago
Here are 2 functions function x——>x3——>-2——->y
anygoal [31]

What are you trying to ask?

I might be able to answer the question correctly if you'd be more specific about the question.

3 0
2 years ago
Which is the better buy; 3 pounds for $8.31 or 5 pound for $12.95
aliya0001 [1]
I would say 5 pounds for $12.95
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4 0
3 years ago
Read 2 more answers
Can someone plz help i dont understand...<br><br><br> WILL MARK BRAINLIEST!!!!
victus00 [196]
What’s the question
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2 years ago
How do I find the value of Q in the following systems so my solution to the system is
vesna_86 [32]
Hello,

if the solution is infinite : the line x-3y=4 ,
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==>x-3y=4 multiplied by 2
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3 years ago
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