Linear Equations Project Based Learning


axis with numbers and titles, AND each graph so I know what graph pertains to which


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PBL Linear Equations

axis with numbers and titles, AND each graph so I know what graph pertains to which
problem.


X
Equation:
(x,y)
20
40
60
80
100
5. On a separate axis, graph the two lines on the same coordinate plane. Show each line in
different colors. What is happening when your line that represents revenue goes above your line
for cost of the business? (5 points)
6. Find the point of intersection on the graph. Check to make sure you have the right point by
using your graphing calculator. (1 point)
7. What does the point of intersection represent? (4 points)
PART III: Graphing Linear Equations WITHOUT a Chart
8. Complete the blanks in the following four pages. Each question is worth 1 point, and you can
use your textbook and prior knowledge to help you fill in the blanks. READ CAREFULLY! (25
points)


PART IV: Graphing Linear Equations How-­‐To
By this point, you should have an idea about the elements of a linear equation, but lets review
and make sure you could graph a linear equation in any form.
y
mx b
The y-­‐intercept is where you place your first point.
Remember: If there is no y-­‐
intercept, it is simply 0.
From this point, your slope tells you where to move from
there.
m
=
rise
run
Examples:
m
= −
1
2
Move down 1 from the y-­‐intercept, and 2 units the right.
m
=
5
3
Move up 5 from the y-­‐intercept, and 3 to the right.
m
= −3 = −
3
1
A whole number is the same as that number over 1.
Move down 3 from the y-­‐intercept and 1 to the right.
slope
y-­‐intercept
The number of spaces you move

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