Finding Slope of a Line
Identify the slope of the following equation. y = mx + b
the variable m
What is the formula to find the slope from given two points?
(y-y)/(x-x)
What form of equations do we use for lines?
y = mx + b or slope intercept form.
Solve:
3x - 2 = -14
x = -4
Write an equation for a vertical line through the point (-3, 3)
x = -3
Name one way to describe slope.
Possible answers: rate of change rise over run y - y x - x slope = m in y = mx + b
Graph the following equation on your graphing paper
y = (-1/3)x + 4
Check it with Mr. Bang
What is our slope in the following equation?
y = x
Slope is 1
What is the slope of this equation?
x = 5
Undefined Slope
Write an equation for a line with the following slope and points.
m = 2/3 and (0, -2), (3, 0)
y = 2/3x - 2
Graph the following equation on your graphing paper.
y = x - 2
Check it with Mr. Bang
What is the slope in the following equation.
y = (-2/3)x - 3
Slope = (-2/3)
Which point is on the line of y = 3x + 1
(3, 9); (2, 6); (2, 7); (2, 8); (4, 8)
(2, 7)
Using the clue, write your equation
"I am a horizontal line"
"One of the points that goes through is (4, -4)
y= -4
Graph the following equation on your graphing paper.
y = (-3/4)x - 2
Check it with Mr. Bang
What is the y - intercept of the following equation?
y = 8x
y intercept is 0
Is x = 2 a solution to the equation 2(x - 5) + 3 = 13 ?
No it is not a solution.
Using the clue, write your equation.
"I am a vertical line"
"I am at the one of the point (-3, 9)"
x = -3