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lions [1.4K]
3 years ago
15

I really don't understand this I need help

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
7 0
In looking at it I would guess it is asking which of the points is on the line? To answer that you would have to take each point an plug it into the equation and see if it is true.

3x - 7 = y

A(9,20)  
3(9) - 7 = 20
27 - 7 = 20
20 = 20 True - this point is on the line

B(5,0)
3(5) - 7 = 0
15 - 7 = 0
8 = 0 False - this point is not on the line

C(3,2)
3(3) - 7 = 2
9 - 7 = 2
2 = 2  True - this point is on the line

I hope this helps
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3. A line goes through the points (3,4) and (-3,6).
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Answer:

Part a) The slope is m=-\frac{1}{3}

Part b) The equation in point slope form is y-4=-\frac{1}{3}(x-3)

Part c) The equation in slope-intercept form is y=-\frac{1}{3}x+5

Step-by-step explanation:

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m=\frac{6-4}{-3-3}

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Part b) Write the equation of the line in point-slope form

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we have

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point\ (3,4)

substitute

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Part c) Write the equation of the line in slope-intercept form

y=mx+b

we have

y-4=-\frac{1}{3}(x-3)

Isolate the variable y

distribute right side

y-4=-\frac{1}{3}x+1

Adds 4 both sides

y=-\frac{1}{3}x+1+4

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2 years ago
Read 2 more answers
The picture says all,,
mixas84 [53]
1/3(9)(10) = 30in^2
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