Definitions
Computation
Images
Logic & Reasoning
100
The ratio of the change in y values over the change of x values
Slope
100
What is the slope of a line with points (2, -3) and (4, 4)?
7/2 or 3.5
100
What is the slope?
Undefined
100
How many solutions are there to 3x - 2y = 6
Infinite
200
The point at which a line crosses the x or y axis
Intercept
200
Write an equation that is parallel to y = -5x +2 and has a y-intercept of
3/5
y = -5x + 3/5
200
Write the equation of line in slope-intercept form
y = -3x - 2
200
You are saving money to go on your class trip. You already have saved $35 and you plan to add $5 to that each week. Write an equation in slope-intercept form that represents how much you save in total.
y = 5x + 35
300
y = mx + b
Slope-Intercept Form
300
Write in slope-intercept form an equation of the line that passes through the points (2, 4) and (5, −2).
y = -2x + 8
300
What formula is this displaying?
Point-Slope Formula
300
Which problem is not a linear equation:
4y = 3x + 2
y = 4x2 - 3
x = 5
y = 4x2 - 3
400
Ax + By = C
Standard Form
400
You are downloading a file. The percent y (in decimal form) of megabytes remaining to download after x seconds is y = −0.1x + 1
After how many seconds is the download 50% complete?
5 seconds
400
Write an equation for each side of the shape
y = 1
y = -2
y = 3x - 5
y = -3x - 5
400
Why does it not matter which two points you pick for (x1, y1) and (x2, y2)? Show examples.
You will get the same answer regardless:
either a positive over positive or negative over negative which are both positive slopes
or negative over positive/positive over negative which are both negative slopes
500
The points along a line in a linear equation.
Solutions
500
Write an equation of the line that passes through (-4, 3) and is perpendicular to
y = -2x + 6
y = 1/2x + 5
500
Write an equation for the yellow line
y = 14x - 108.5
500
A craft fair promises to donate $100 plus 3% of every ticket (which cost $12) sold to a charity. Write an equation in slope-intercept form that represents how much the fair will donate to charity.
y = 0.36x + 100