Blitzer 2.4 Math 152 Linear Functions Slope Worksheet Page 4
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72) 3x + 4y = 12
V. Graphing Horizontal and Vertical Lines
A. If an equation has only one variable, then its graph is either a horizontal line or a
vertical line.
B. Consider the equation, x = 2.
a. What ordered pairs are solutions to this equation?
b. Plot those points and draw a line through them.
c. What does the line look like?
We can generalize and say:
The graph of x = # is a ___________________ line going through the point ( #, 0).
C. If we did the above work for y = 2, we would see that we get a _______________ line.
So we can generalize and say:
The graph of y = # is a ___________________ line going through the point ( 0, #).
Examples:
1) x = 4
2) 2y = 6
3) f(x)= −2
Blitzer — 2.4
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