Finding Slope of a Line
Identify the slope of the following equation. y = mx + b
the variable m
Identify the y-intercept of the following equation. y = mx + b
The variable b
How would you graph y = 1/3x + 7
start at 7 and go up 1 over 3
What is the slope
y - 4 = 2 (x - 5)
2 or 2/1
Solve for x
3x + 5 = 11
3x = 6
x = 2
Identify the slope of the following equation. y = 2x + 3
slope is 2
The y-intercept is found where x = ______
0
How would you graph y = -2/5x + 3
Start at 3 and go down 2 over 5
Find the Y-intercept
2x - 3y = 18
18/-3
y=-6
Write an equation for a vertical line through the point (-3, 3)
x = -3
Find the slope in the equation. y = -1/2x + 5
-1/2
What is the y-intercept. y = 1/3x + 4
4
How would you graph y = -4 + 5/3x
Start at -4 and go up 5 over 3
What point can be found from point slope form.
y - 4 = 3/2 (x - 1)
(1, 4)
Write the equation. Tammy has 30 dollars and makes 5 dollars for every driveway she shovels. Show when she has 70 dollars.
30 + 5x = 70
Find the slope of the line that includes the following points. (8, 5) (2, 3)
2/6 or 1/3
What is the y-intercept. y = -3 + 2x
-3
How would you graph y = 2x
start at 0 and go up 2 over 1
Find the intercepts. 8x + 4y = 16
16/8 and 16/4
x=2 x=4
Evaluate for when x = 4
2x - 7
8 - 7
1
Find the slope of the line that includes the following points. (-12, -9) (-3, -3)
-6/-9 = 6/9 = 2/3
What is the y-intercept. y = 4/5x
0
Rewrite the following equation in slope-intercept form. 3x + 2y = 8
2y = 8 - 3x
y = 4 - 3/2x
Rewrite in slope intercept form
y - 3 = 2(x + 4)
y - 3 = 2x + 8
y = 2x + 11
Evaluate for when a = 2 and b = 5
2a - 1b + 3
4 - 5 + 3
-1 + 3
2