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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

8. An Introduction to Equations

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Exercise 59 Page 57

Use mental math to guess the starting value for the table.

0

Practice makes perfect

Consider the given equation.

1=-1/4n+1 This is not the easiest thing to calculate in our heads. Let's solve this equation using a table. In order to choose a good starting point for our table, let's pretend that the equation is 1=- 14n. What multiplied by - 14 would get us close to 1? -4 would be valid, so let's try that in our table. We can build the table from there.

n	-1/4n+1	=
-4	-1/4(-4)+1	2
-3	-1/4(-3)+1	1 34
-2	-1/4(-2)+1	1 24
-1	-1/4(-1)+1	1 14
0	-1/4(0)+1	1

We can see that n=0 is the solution to our equation.

Subchapter links

Lesson Check p.56

Practice and Problem-Solving Exercises p.56-58

Standardized Test Prep p.58

Mixed Review p.58