Chapter 7 7.1 Slope-Intercept Form Worksheet - Mhr Page 10
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17Key Ideas
• The slope-intercept form of a linear equation is y = mx + b,
where m represents the slope and b represents the y-intercept.
y = 2x +
1
slope = 2
y-intercept = 1
_
_
rise
2
The graph passes through (0, 1).
run =
1
y
y = 2x + 1
4
2
x
-4
-2
2
4
0
-2
Check Your Understanding
Practise
What are the slope and y-intercept of each line?
1.
_
y = 3
y = -5x + 4
x + 1
a)
b)
4
y = x - 7
y = -4x
c)
d)
y = -3
y = 0.5x - 1.25
e)
f)
Consider the line y = -3x + 2.
2.
What are the slope and y-intercept of the line?
a)
Explain how you could sketch the graph of this line using
b)
the slope and y-intercept.
Sketch the graph of each line using the slope and y-intercept.
3.
Use graphing technology to check your graphs.
y = 2x - 3
y = -4x + 8
a)
b)
_
y = 5
y = -x + 1
x - 4
c)
d)
2
_
y = - 3
x + 2
y = 5
e)
f)
4
349
7.1 Slope-Intercept Form • MHR
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