Graph it Out
The horizontal axis on the coordinate plane is called this.
x-axis
This type of graph shows the relationship between two sets of data using points on a coordinate plane.
scatter plot
A system of equations is a set of two or more equations with the same set of these.
variables
The steepness of a line is described by this property, often represented by the letter m.
slope
This quadrant of the coordinate plane contains points where both x and y are positive.
I 1 ONE
The point (0, 0) where the x-axis and y-axis meet is called this.
origin
When the points on a scatter plot tend to go upward from left to right, it shows this type of correlation.
positive correlation
This method involves replacing one unknown with an equivalent expression from the other equation.
substitution
This is the standard form of the equation of a line: Ax + By = C, where A, B, and C are this type of number.
Integers (Real)
In a scatter plot, a strong negative correlation suggests that as one variable increases, the other does this.
DECREASES
This formula is used to calculate how far are two points on the coordinate plane.
distance formula
This is the name of the line that best represents the general direction of the data on a scatter plot.
line of best fit
When solving a system by graphing, the solution is found at this point.
intersection
The equation y = mx + b is called this form of a linear equation.
slope-intercept form
If a system of equations has infinitely many solutions, the equations represent this kind of line relationship.
coinciding
*** TRIPLE ***
This formula gives the slope of a line given two points: (x₁, y₁) and (x₂, y₂).
What is (y₂ - y₁) / (x₂ - x₁)?
A scatter plot with points that are widely spread out and show no clear pattern indicates this type of correlation.
no correlation
If a system of equations has no solution, the lines on a graph do this.
parallel (wont intersect)
Two lines are perpendicular if the product of their slopes equals this number.
-1
The equation of a line with a slope of 4 and a y-intercept of –2 is written like this.
y =4x-2
The coordinate plane is divided into 4 of these
Quadrants
If one variable increases as the other decreases in a scatter plot, the data shows this type of relationship.
negative correlation
*** DOUBLE ***
This method of solving systems involves adding or subtracting the equations to eliminate an unknown.
Elimination
The equation y - y1 = m(x - x1) is called this form of a linear equation.
Point-slope form
*** DOUBLE ***
A vertical line has _________ slope
Undefined