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3 years ago

8

How do I write an equation in point slope form

2 answers:

MaRussiya [10]3 years ago

7 0

The formula is
y-y1 = m(x-x1)
First, find the slope using the points (- 2, 3)<span> and </span>(3, - 1)<span> : </span><span>m = 3-(-1)/-2-3 = 4/-5 = -4/5</span>
<span>Next, pick a point -- for example, </span>(- 2, 3)<span> . Using this point, x1</span><span> = - 2</span><span> and y1</span><span> = 3</span><span> .</span>
<span>Therefore, the equation of this line is </span><span>y - 3 = -4/5 (x - (- 2))</span><span> , which is equivalent to </span><span>y - 3 = - 4/5(x + 2)</span><span> .</span>

valentina_108 [34]3 years ago

5 0

Hi there...
the point slope formula is
y-y1=m(x-x1)

where y and x represent any points
y1 and x1 represents known points
and m represents the slope

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vesna_86 [32]

Answer:

y = - $\frac{3}{4}$ x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

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m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (4, 0) ← 2points on the line

m = $\frac{0-3}{4-0}$ = - $\frac{3}{4}$

Note the line crosses the y- axis at (0, 3 ) ⇒ c = 3

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