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Write an equation for the following scenario.... A man walks onto an elevator on the 5th floor. He goes down 2 floors and gets off the elevator. He walks 5 doors over to his apartment.
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
How many spaces do you go up in the equation y=5x + 3?
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
Jack hired a plumber to fix his sink. The plumber charges $80 just to come out to the house and $45 per hour to fix the sink. What is the equation for this problem?
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
Is the plumbing problem proportional?
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
What calculator functions do you use to find slope from a table?
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
The top part of the fraction for slope is the....
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
When looking at a graph, you can tell it's proportional because....
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
Is y=mx + b or y=kx proportional
y=-2/5x + 5
Stat Enter X values on L1, Y values on L2 Stat Calc 4 Enter Enter Enter Enter
5
the y-intercept goes through the origin
y value that goes up and down.
y=kx
y=45x + 80
No because the plumber charges 80 to start which means there is a y-intercept.
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