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Unit 6 (Slope Formulae (. (Straight lines have either an x of 0 or a y of…
Unit 6
Slope Formulae
.
Straight lines have either an x of 0 or a y of 0
Slope y-intercept format y=mx+b
Substitute
y
for 0 in a linear equation i.e
2x+3y = 6
2x+3(0) = 6
2x = 6
Need the slope of a line and the y-intercept to find the Equation of a line
M = (Y2 - Y1) / (X2 - X1)
m = rise
run
Equation Forms
Linear (Slope
n-intercept)
Form
No exponents with linear equations
y = 2x + 1 is a linear equation
No square roots with linear equations
Restrictions
Some linear equations have min/max values, represented as the equation
N
EW |
x
≤
y
≤
z
Standard Form
Rearranging to
n
-intercept Form
Ax + By = c
Write the equation into y = mx + b form by plugging the equation into y - k = m (x - h).
Parallel/Perpendicular
Find slope of the line, and use it to find the y-intercept
Table of Values
