Parallel and Perpendicular Lines (general knowledge)
Slopes of two parallel lines will always be...
The same!
The slope of a line parallel to a line with a slope of -4/5 would be...
-4/5
What is the slope of a line parallel to the line y=-2/3x + 5
-2/3
What type of correlation is this:
Temperature and ice cream sales
Positive
What is the standard form for a linear equation?
Ax + By = C
Flip (the numbers) and switch (the signs)!
The slope of a line perpendicular to a line with the slope of 4 is...
-1/4
What is the slope of a line perpendicular to y= 7x + 4?
-1/7
What type of correlation is this:
Hours of studying time and exam scores
Positive
What is the coordinate point for the y intercept?
3x - 4y = 16
(0,-4)
90 degree angle (or right angle)
y= 2x -4 y= 2x + 7
Parallel
Write an equation of a line that is parallel to y= 4x - 7 with a y-intercept of -2
y= 4x -2 OR y= 4x + (-2)
What is another name for the line of best fit?
Trend line
Which set of values represent the domain?
x
True or false: Parallel lines will eventually intersect.
False
Parallel, perpendicular, or intersecting?
y= -2/4x -4 y= 2/4x + 7
Intersecting
Write an equation of a line that is perpendicular to y= -1/8x + 4 with a y-intercept of 3.
y= 8x + 3
What type of correlation is this:
Coke drinkers and Alabama Fans
No
solve the following equation
x = x
All real numbers or infinity many solutions
What is the term for lines that cross, but are neither parallel or perpendicular?
Intersecting lines
Parallel, perpendicular, or intersecting?
y= 7/4x -4 y= -4/7x + 7
Perpendicular
Write an equation of a line that is perpendicular to y= 9/4x -8 with a y-intercept of (0, -1)
y= -4/9x -1 OR y= -4/9x + (-1)
What type of correlation is this?
Time spent of watching tv and exam scores
Negative
Convert the equation to standard form
-3y = -2x -7
2x - 3y = -7