SOLUTION: My son has an assignment from a substitute that apparently did not explain the homework sheet to the students. Question: Is the relationship shown by the data linear? If it i

Question 244189: My son has an assignment from a substitute that apparently did not explain the homework sheet to the students.
Question: Is the relationship shown by the data linear? If it is, model the data with an equation.
X Y
2 3
3 7
4 11
5 15
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
X Y
2 3
3 7
4 11
5 15
SLOPE=(7-3)/(3-2)=4/1=4
SLOPE=(11-7)/(4-3)=4/1=4
SLOPE=(15-11)/(5-4)=4/1=4
3=2*4+b
3=8+b
b=3-8
b=-5
Y=4X-5 ans. for the line equation.
(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 4x -5).
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