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Crank
3 years ago
14

Find an equation of the line that goes through the points (7,-42) and (10,-57). Write your answer in the form

Mathematics
2 answers:
aksik [14]3 years ago
4 0

Answer:

y = -5x - 7

Step-by-step explanation:

What's the slope of this line?  Going from  (7,-42)  to  (10,-57), we see x increasing by 3 and y decreasing by 15.  Thus, the slope is m = rise / run = -15/3, or m = -5.  

Now subst. -42 for y in y = mx + b, -5 for m and 7 for x:

-42 = -5(7) + b.  Thus, b = -42 + 35, or b = -7. and the equation of this line is thus   y = -5x - 7.

Check:  if x = 10, does this equation yield y = -57?  Yes

tatuchka [14]3 years ago
3 0
Y=-5x-7. I'm almost certain but you never know
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6 0
3 years ago
When given a raw score, explain how to use the normal curve to compare that
stepladder [879]
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7 0
3 years ago
Find the slope between the points. (4,-2) and (8,5)
aksik [14]
Slope = m

Equation to find slope is:

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

2 points:
(4,-2) 4 = x1 and -2 = y1
(8,5) 8 = x2 and 5 = y2

So...

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

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m = 7 / 4 or 1.75

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3 0
3 years ago
Help me get these answers please :) in college need help.
ivolga24 [154]
P(person has less than a high school education) = 0.12.  This is directly from the table.

P(person has at least a bachelors degree:  Hard to say for certain, because some of the data in your illustration was cut off.


7 0
3 years ago
Mel use partial quotients to find the quotient of 378 ÷3 what could be the partial quotient that Mel found
UNO [17]
378 divided by 3 = 126 
So your answer is 126
3 0
3 years ago
Read 2 more answers
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