#### Transcript of Copy of 5.1 Write Linear Equations in Slope-Intercept Form

Write Linear Equations in Slope-Intercept Form

When given: m & b

Use slope-int form to write an equation of a line.

You can write an equation

of a line IF you know the y-int & any other point of the line.

Conclusion

is here

Goal: Write equations of lines

Write an equation of the line when slope is -4 and the y-intercept is -8

m = -4

b = -8

y = -4x + (-8)

Y-int = ?

Other point on line = ?

(0, 4)

Y-int

(1,2)

Other

Point

(0, 4) & (1, 2)

Find slope by using:

Y2 - Y1

X2 - X1

2 - 4 -2

1 - 0 1

**-2**

1

**M**

**4 = B**

SOOOOOOOO...

**y = -2 + 4**

1

Y-int

Other point

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