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Slope Practice
1.
Find the slope and the y-intercept of the line whose graph is shown.
2.
Find the slope and y-intercept of the graph of the equation.
3.
4.
a) y = 3/2x – 4
b) y = 1/2x + 3
c) y = -3x – 5
d) y = 3/4x + 2
e) 2x + 5y = 10
f) 3y – 4x = 9
g) 5x – 2y = -7
h) 10x – 5y = 15
Decide whether the graphs of the two equations are parallel, perpendicular or neither.
a) y = .5x – 7 and y = .5x – 10
b) y = 1/4x + 4 and y = -4x – 7
c) y = -5x + 2 and y = 5x – 2
b) 3x – 7y = 21 and 7x + 3y = -9
b) 4x – 8y = 16 and x – 2y = 10
c) y = x – 2 and 2x – 3y = 6
The graph at the right represents the weight loss of a wrestler as he prepares for the state meet.
a) Find the slope of the line. What does it represent?
b) Find the w-intercept. What does it represent?
c) If the wrestler lost 2 pounds per week, how would the graph
change?
5.
Write a linear model for the given situation. A telephone company charges $1.50 for the 1st minute and
$.07 per minute for each additional minute. Let y equal the cost and x be additional minutes. How much
would a telephone call cost if you talked for that 1st minute and an additional 20 minutes?
6.
How can you visually tell if a line has:
a) a negative slope
b) a positive slope
c) a slope of zero
d) no slope