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Zielflug [23.3K]
3 years ago
9

Which equation is a point slope form equation for line ab?

Mathematics
1 answer:
lara [203]3 years ago
6 0

we have point (1,-1)

and point  (-3,5)

 slope =(y2-y1)/(x2-x1)

   m = (5-(-1))/(-3-(1))

  m = 6/(-3-1)

   m = 6/-4

   m = -3/2

point slope form

y-y1 = m(x-x1)

y-(-1) =-3/2(x-(1))

y+1=-3/2(x-1)

Choice B


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12345 [234]

System of Linear Equations entered :

[1] y - 2x/3 = -1

[2] y + x = 4

// To remove fractions, multiply equations by their respective LCD

Multiply equation [1] by 3

// Equations now take the shape:

[1] 3y - 2x = -3

[2] y + x = 4

Graphic Representation of the Equations :

-2x + 3y = -3 x + y = 4

Solve by Substitution :

// Solve equation [2] for the variable x

[2] x = -y + 4

// Plug this in for variable x in equation [1]

[1] 3y - 2•(-y +4) = -3

[1] 5y = 5

// Solve equation [1] for the variable y

[1] 5y = 5

[1] y = 1

// By now we know this much :

y = 1

x = -y+4

// Use the y value to solve for x

x = -(1)+4 = 3

I hope this help you

8 0
3 years ago
Slope is –2 &amp; (5, 3) is on the line.<br> Y-Intercept:<br> Equation of the line (no spaces):
GREYUIT [131]

Answer:

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Step-by-step explanation:

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y = -2x+b

Substituting the point

3 = -2(5) +b

3 = -10 +b

Add 10 to each side

13 =b

The y intercept is (0,13)

The equation of the line is y = -2x+13

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san4es73 [151]
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<span>
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3 years ago
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