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Which is an equation in point-slope form for the given point and slope?



Point: (1, –7); Slope:

y – 7 = (x – 1)


y + 7 = (x + 1)

y – 7 = (x + 1)

y + 7 = (x – 1)
1 points Save Answer

QUESTION 3

Which is an equation in point-slope form for the given point and slope?


Point: (5, 9); Slope: 2

y – 9 = 2(x – 5)


y – 5 = 2(x + 9)


y + 9 = 2(x – 5)


y – 9 = 2(x + 5)

1 points Save Answer

QUESTION 4

Which equation is graphed here?





Graph of a line containing the following points: (–2, 4), (0, 1), and (2, –2).










Which is an equation in pointslope form for the given point and slope Point 1 7 Slope y 7 x 1 y 7 x 1 y 7 x 1 y 7 x 1 1 points Save Answer QUESTION 3 Which is a class=

Respuesta :

gmany

The point-slope form: [tex]y-y_1=m(x-x_1)[/tex]

Q2.

[tex](1,\ -7)\to x_1=1,\ y_1=-7\\m=1\\\\y-(-7)=1(x-1)\\\\y+7=(x-1)[/tex]

Q3.

[tex](5,\ 9)\to x_1=5,\ y_1=9\\m=2\\\\y-9=2(x-5)[/tex]

Q4.

[tex]y=mx+b\\\\(0,\ 1)\to b=1\\\\y=mx+1[/tex]

The formula of a slope: [tex]m=\dfrac{x_2-x_1}{y_2-y_1}[/tex]

[tex]((-2,\ 4)\to x_1=-2,\ y=4\\(2,\ -2)\to x_2=2,\ y_2=-2\\\\m=\dfrac{-2-4}{2-(-2)}=\dfrac{-6}{4}=-1.5[/tex]

[tex]y=-1.5x+1[/tex]