Respuesta :
Answer:
y = -2x + 3
Step-by-step explanation:
Lets just put the three points together.
(-1, 5) (-4, 11) (-7, 17)
First let's find the slope with y2 - y1/x2 - x1
Plug in using (-1, 5) and (-4, 11)
11 - 5/-4 + 1 = 6/-3 (simplify)
-2 is the slope
Now plug in (-7, 17) in the equation to get b or the y-intercept)
y = mx + b
17 = -2(-7) + b
17 = 14 + b (subtract 14 on both sides)
3 = b
y = -2x + 3
The equation of the line that passes through the points in the table is:[tex]y = -2x +3[/tex]
The line passes through the following points
x (-1, -4, -7)
y (5, 11, 17)
Start by calculating the slope (m) of the line
[tex]m = \frac{y_2 - y_1}{x_2 -x_1}[/tex]
So, we have:
[tex]m = \frac{17 - 11}{-4+1}[/tex]
Evaluate the differences
[tex]m = \frac{6}{-3}[/tex]
Evaluate the quotient
[tex]m = -2[/tex]
The equation is then calculated as:
[tex]y = m(x -x_1) +y_1[/tex]
This gives
[tex]y = -2(x+1) +5[/tex]
Open the brackets
[tex]y = -2x-2 +5[/tex]
Evaluate the like terms
[tex]y = -2x +3[/tex]
Hence, the equation of the line is:[tex]y = -2x +3[/tex]
Read more about linear equations at:
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