Slope-Intercept Form (y = mx + b)

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Show your work for each problem.

1.
What is the slope of ?
2.
What is the y-intercept of ?
3.
A line passes through and has slope . What is the equation in slope-intercept form? Write as y=mx+b
4.
If a line has slope , starting at , what is the y-value when ?
5.
A line passes through and . What is the slope?
6.
Which line has a positive slope?
1. a)
2. b)
3. c)
4. d)
7.
Where does the line cross the y-axis?
1. a)
2. b)
3. c)
4. d)
8.
Convert to slope-intercept form.
1. a)
2. b)
3. c)
4. d)
9.
Which lines are parallel?
1. a) and
2. b) and
3. c) and
4. d) and
10.
A line passes through and . What is its equation?
1. a)
2. b)
3. c)
4. d)
11.
A phone plan costs 25 dollars per month plus 2 dollars per GB. What equation represents the total cost y for x GB?
1. a)
2. b)
3. c)
4. d)
12.
Identify the slope and y-intercept of
13.
Graph . Find the y-intercept and one more point.
14.
Convert to slope-intercept form.
15.
Find the equation of a line with slope passing through .
16.
Find the slope of the line passing through and .
17.
A line passes through and . Write the equation in slope-intercept form.
18.
A gym charges 50 dollars to join plus 30 dollars monthly. How much will you pay after 6 months?