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marissa [1.9K]
3 years ago
9

Write an equation in slope-intercept form for the line with slope 3 that contains the point (5,-1).

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
5 0

The point-slope form:

y-y_1=m(x-x_1)

m - slope

(x₁, y₁) - point

We have the slope m = 3 and the point (5, -1). Substitute:

y-(-1)=3(x-5)\\\\y+1=3(x-5)

Convert to the slope-intercept form: y=mx-b

y+1=3(x-5)          <em>use distributive property a(b + c) = ab + ac</em>

y+1=3x-15           <em>subtract 1 from both sides</em>

\boxed{y=3x-16}

Pavlova-9 [17]3 years ago
4 0

Answer:

y = 3x-16

Step-by-step explanation:

We know the slope and a point , so we can use the point slope form of the equation for a line

y-y1 = m(x-x1) where the slope is m and the point is (x1,y1)

y--1 = 3(x-5)

y+1 = 3(x-5)

We need to rearrange the equation into slope intercept form  y=mx+b

First distribute the 3

y+1 =3x-15

Then subtract 1 from each side

y+1-1 =3x-15-1

y = 3x-16

This is in slope intercept form

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