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mrs_skeptik [129]
3 years ago
15

7. Which of the following is an equation of the line through (11, -3) and (7, 9)?

Mathematics
2 answers:
pantera1 [17]3 years ago
6 0

Answer:

y=-3x+30

Step-by-step explanation:

natali 33 [55]3 years ago
6 0

Answer:

<h3><u>y = -1/5x + 24/5</u></h3>

Step-by-step explanation:

<h2><u>in order to get an equation of a line :</u></h2><h3><u><em>Get the gradient : </em></u></h3>

which is (y2-y1)/(x2-x1)

= 9-11 / 7- -3

= -2/10

gradient = -1/5

<h3><u>Get the midpoint :</u></h3>

which is (x1 + x2)/2 , (y1+y2) / 2

= 11+7 = 18/2 = 9

= -3 + 9 = 6/2 = 3

midpoint = (9,3)

now create the equation using the formula

Y1 - y = m(x1 - x)

where m is the gradient

now place the midpoint values in the equation

y- 3 = -1/5 (x-9)

y - 3 = -1/5x +9/5

y=-1/5x + 9/5 +3

<h3><u>y = -1/5x + 24/5</u></h3>
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