What does a negative slope indicate about how y changes as x increases?
QUESTION
A table lists x:2,4,6 and y:5,10,15. What is the constant of proportionality k in y=kx?
QUESTION
What does the x-axis represent on most graphs?
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ANSWER
The independent variable (input). In standard coordinate graphs, the horizontal x-axis displays the independent variable, which is manipulated or input to observe changes in the dependent variable.