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sergij07 [2.7K]
3 years ago
8

Year 9 Maths - linear equations please help

Mathematics
2 answers:
MAXImum [283]3 years ago
6 0
X=3, Y=9
X+Y=12
Y=X+6

X+X+6=12
2X=6
X=3

Y=3+6=9
jek_recluse [69]3 years ago
3 0

Answer:

x=1 & y=6 or (1,6)

Step-by-step explanation:

3x-x+5=7   Substitute the 2nd equation in for y  

2x+5=7      Do 3x-x to get 2x

2x=2          Subtract 5 from both sides

x=1              Divide 2 from both sides

y=1+5          Insert 1 as x

y=6             Add 1+5 to solve for y

Hope this helped!  

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Sergeu [11.5K]

I believe the correct answer should be the second option. This makes the most sense given the coordinates.

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3 years ago
Find the slope of the line passing through the points (-3, 7) and (2, -6)
Sliva [168]

Answer:

The slope of the line passing through the points (-3, 7) and (2, -6) is -13/5.

Step-by-step explanation:

Use the slope formula to find the slope of the line based on two points.

m = y₂ - y₁/x₂ - x₁

Substitute the values

m = -6 - 7/2 - (-3)

Simplify.

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4 0
3 years ago
Which point lies on the graph of the equation 10y = 3x - 11?
GaryK [48]

Answer:

A. (2,-0.5)

Step-by-step explanation:

A pair of coordinates is always (x,y) so

If you insert the numbers into the equation you get

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Therefore (2,-0.5) is the point that likes on the graph

5 0
3 years ago
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8_murik_8 [283]

Answer:

0.75 or 3/4

Step-by-step explanation:

f(-2) = 3•2^-2

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f(-2) = 0.75 or 3/4

Hope this helps! :)

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Answer:

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