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Leona [35]
3 years ago
8

How can graphing methods be used to solve a system of linear equations and how can you determine the equations of the two lines

by analyzing the graph?
Mathematics
1 answer:
sergejj [24]3 years ago
4 0
Making graphical representations allow you to plot points and compute for the equation of the line following available derived formula to compute linear formula given two points.

The principal equation is the point-slope formula y=mx+b
Where, m = slope or rate of how the elevation or depression between two reference points.


Say for example you have pt 1 (1,1) and pt 2(0,0)
compute first for slope where m = (y2-y1)/(x2-x1) = (0-1)/(0-1) = 1
Now using point slope formula given p1 (1,1) and slope of m=1

(y-y1)=m(x-x1)
y-1=(1)(x-1)
y=x

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What best describes the expression y over 7? 7 times some number Some number minus 7 7 more than some number Some number divided
marysya [2.9K]
"Over" usually means divide. First hint, check.

If we write it out, it looks like this:

\frac{y}{7}

This is the same as <em>some number divided by 7.</em>
4 0
3 years ago
Read 2 more answers
Write and solve an inequality.
TEA [102]

Answer:

ok

Step-by-step explanation:

4 0
2 years ago
What is the slope of a line that is perpendicular to the line y = 8x + 5?
Bond [772]
The options are wrong lol, it is -1/8
8 0
3 years ago
heather has divided $6300 between two invesments, one paying 9%, the other paying 4%. If the return on her investment is $372, h
Ganezh [65]
Assuming that the two investments are  X & Y
X + Y = 6300
X = 6300 - Y                                       (1)

9/100X + 4/100 Y = 372                       (2)
replacing X from (1) into (2)
9/100(6300-Y) + 4/100 Y = 372
567 - 9/100Y +4/100Y = 372
(-9+4)/100Y = 372 - 567
5/100Y = -195
Y = 100*195/5 = 3900
From (1) we can get X
X = 6300 - 3900 = 2400

I hope this is helpful 



6 0
3 years ago
Need answer ASAP<br><br><br><br><br> Express a 10/3 b 7/3 in simplified radical form.
anastassius [24]
I guess this is what you mean     3√a^10      and 3√b^7
5 0
3 years ago
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