Is it a function?
{(2, 1), (0, -5), (-4, 1), (9,1), (0, 0)}
No, because the x-value of 0 repeats.
Given y=-x-6; D={-4, -2, 1, 6} find the range.
R={-12, -7, -4, -2}
What is the Vertical Line Test?
States if you draw a vertical line anywhere on your graph and it does NOT intersect more than one point, then it IS a function.
What is a ratio?
A fraction.
{(-4, 0), (-3, -2), (-2, 6), (-1, 0), (0, 7)}
Yes, because no x-values repeat.
Given y=4x+1; D={-1, 0, 1, 2}
R={-3, 1, 5, 9}
What is rate of change?
The ratio that shows how one variable changes with respect to another.
What is slope, and what variable do we use to represent it?
Slope is the measure of how steep a graph is. We use the variable m to represent slope.
Refer to figure 1 for the question.
Yes, because no x-values repeat.
Given y=-2/3x+5; D={-9, -6, 0, 3}
R={3, 5, 9, 11}
What ratio do we use for slope?
rise/run
What is a relation?
A set of ordered pairs.
Refer to figure 2 for the question.
No, because an x-value repeats.
Given y=-6x-2; D={-10, -3, 0, 8}
R={-50, -2, 16, 58}
What are the 4 different kinds of slopes?
Negative, positive, zero, and undefined.
What is domain and range?
Domain is all the x-values and range is all the y-values.
Refer to figure 3 for the question.
Yes, because it passes the vertical line test.
Given y=4/5x-8; D={-5, 0, 5, 10}
R={-12, -8, -4, 0}
What do we call the types of equations we have been graphing?
LINEAR equations
What is a function?
When a relation has no repeating x-values.