Algebra 2

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Algebra 2 Ch.2 Notes Page 7 P7 2-2 Linear
Equations Part 2
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Types of Equations
Slope-Intercept Form y mx b Standard Form Ax
By C Point-Slope Form y - y1 m (x -
x1) Horizontal Lines Vertical Lines y Number
x Number Parallel and Perpendicular
Lines Slopes and Reciprocals
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Slope Intercept Form y mx b
m 3 and (2, 4)
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Standard Form
Ax By C
4x 8y 24
Find X and Y Intercepts
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Point Slope Form y - y1 m(x - x1)
m 1/2 and (-3, -4)
m 2 and (3, 4)
m 2 and (0, 4)
m 2 and (5, 0)
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3 equations for a line Slope-intercept y mx
b Point-slope y - y1 m(x -
x1) Standard form ax by c
y-intercept
slope
all x, y STAY as they ARE!
(x,y) point on line
numbers
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Vertical Lines Up down. Have undefined
slope Equation x some number.
Horizontal Lines Left right Have zero
slope Equation y some number.
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Parallel Lines never touch each other, so they
must have THE SAME SLOPE!!
y 2x 5 Parallel and through (4,6)
Perpendicular Lines hit each other at a right
angle. one slope has to positive, one has to be
negative. They must be negative reciprocals
y 2/3x 3 Perpendicular and through (4,6)
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HW 5 2-2 P68 20,24,26,30,32,36,43,45,48,51,57
Please put your name and class period at the top
of the homework. Also include the homework
number.