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Alex777 [14]
3 years ago
10

(7, -3) and (9, -5) find the slope

Mathematics
1 answer:
anzhelika [568]3 years ago
8 0
The slope is -2. You find this by putting the rise between the two points over the run.
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Find the equation of the line through (-9,6) that is perpendicular to the line through (7,8),
Setler [38]

Step-by-step explanation:

I assume as "equation" we mean the slope-intercept form :

y = ax + b

"a" is the slope of the line (y coordinate change / x coordinate change when going from one point to another on the line). b is the y-intercept (the y value when x = 0).

we get the slope by finding the perpendicular slope of the first line.

the slope of the first line when going from (-3, -9) to (7, 8) :

x changes by + 10 (from -3 to +7).

y changes by + 17 (from -9 to +8).

so, that slope is 17/10.

the perpendicular slope is turning the original slope upside-down and flips the sign :

-10/17

so, a = -10/17

now, as we have only the slope and a point of the new line, we can use the point-slope form to stay and then transfer into the slope-intercept form.

y - y1 = a(x - x1)

where "a" is again the slope, and (x1, y1) is a point on the line

y - -6 = -10/17 × (x - -9)

y + 6 = -10/17 × (x + 9) = -10/17 × x - 90/17

y = -10/17 × x - 90/17 - 6 =

= -10/17 × x - 90/17 - 102/17 =

= -10/17 × x - 192/17

so, the equation is (in a maybe nicer way)

y = -1/17 × (10x + 192)

7 0
1 year ago
(15 PTS) Help me plz.
OlgaM077 [116]

Answer:

1.) C      2.) B         3.) B

Step-by-step explanation:

I had to do the same thing :)

8 0
2 years ago
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An investment fund grows at a rate of 17%, once a year. Yahya puts $1,000 in the account as the principal. How can Yahya set up
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Answer:

Step-by-step explanation:

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3 years ago
5 common multiples of 7 and 20
mafiozo [28]
7,14,21,28,35,42,49,56,63,70,77,84,91,<span>98,105,112,119,126,133,140,147,154,161,168 that is multiples of 7

</span>20<span>, 40, 60, 80, 100, 120, 140 that is some multiples of 20
</span>hope it helps you
8 0
3 years ago
What is the opposite of 1 1/7
stellarik [79]
Answer is -11/7 (extra letters)
7 0
2 years ago
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