Quick Start Expectations1. Fill in planner and HWRS
HW: p. 98, #2-6, 7a-b, 8-12
2. Get a signature on HWRS3. On desk: journal, calculator, HWRS, pencil, pen
4. Warm Up:
Define all the parts of the equation.
y = mx + b
The dependent variable Slope The
independent variable
Y- intercept
How do you find the slope from…
a graph?• Rise (vertical change)
Run (horizontal change)
a table?• As x goes up by 1, what happens to y?
an equation?• The coefficient • (the number next to the variable)
Y-intercept =
Slope = Rise = Run
6
-3 1
Y = 6 - 3x
Y-intercept =
Slope = Rise = Run
Y = 3x + 6
6
3 1
Y-intercept =
Y = 1.5x - 1
Slope = Rise = change in Y = Run change in X-1
3 2
Y-intercept =
Y = -0.5x + 5
Slope = Rise = change in Y = Run change in X5
-0.5 1
Y-intercept = Slope = coefficient of xSlope =
5
2.5
Y-intercept = Slope = coefficient of xSlope =
20
-3
Slope = Rise = change in Y = Run change in X
Make a table?
Or calculate the change in y divided by the change in x
-1
Use the table to find 2 more points?Find the y-intercept , write the equation, use substitution?
(4, 4)(5, 3)(6, 2)
Graph the points?
a graph?• Rise (vertical change)
Run (horizontal change)
a table?• As x goes up by 1, what happens to y?
an equation?• The coefficient • (the number next to the variable)
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