Special Cases
Write an equation of a line that is PARALLEL to y = 3x +5
Answers vary. The slope must be 3.
(5, 7) and (3, 6)
What is 1/2?
Is this written in slope intercept form or standard form?
y = -x + 2
Slope intercept
Write an equation in slope-intercept form when slope = 3 and the y-intercept is 2
What is y = 3x + 2?
Write in standard form: y = -8x - 3
What is 8x + y = -3?
What is the y-intercept or starting point of y = -2x?
(0,0) or the origin
Is this written in slope intercept form or standard form?
4/5 x + 2y = 12
Standard Form
Write in slope-intercept form:
5x + 3y = 15
What is y = -5/3 x + 5?
Describe what y = 4 looks like.
A horizontal line with a y-intercept of 4.
Is this written in slope intercept form or standard form?
y = 1/4x - 7
Slope intercept
Identify the slope:
y = -5/2 x - 3/4
What is -5/2?
True or False
y = mx + b is a linear equation
True
Describe what x = -1 looks like.
A vertical line with an x-intercept of -1.
Is this written in slope intercept form or standard form?
Ax + By = C
Standard
Identify the y-intercept:
y = 3/4x - 2
What is -2?
For y = -3x + 10 is the slope positive or negative?
Negative
Write an equation of a line that is PERPENDICULAR to y = -3/2 x + 1
Answers vary. The slope must be 2/3.
Is this written in slope intercept form or standard form?
y = mx + b
Slope Intercept
Write in slope-intercept form:
slope = 2; (3, 5)
What is
y = 2x -1?
Final Jeopardy:
For a line with a positive slope, which of the following are correct?
1. The x-intercept and y-intercept MUST have opposite signs.
2. The x-intercept and y-intercept can both be 0.
3.The x-intercept and y-intercept can have opposite signs.
4.The slope is equal to y-intercept/x-intercept.
5.The product of the x-intercept and the y-intercept can be positive.
2,3,4