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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Quadratic Graphs and Their Properties

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Exercise 59 Page 552

Substitute -5 for a, and -4 for b.

-0.4

Practice makes perfect

To evaluate the given expression for a = -5 and b = -4, we should substitute these values into the expression and simplify as much as possible. We are given an expression and asked to evaluate it for some given values. a=-5and b=-4 This means that we should substitute -5 for a and -4 for b in the given expression and then evaluate. Let's start.

-b/2a

a= -5

-b/2* (-5)

b= -4

-(-4)/2* (-5)

Multiply

-(-4)/- 10

- (- a)=a

4/- 10

MoveNegDenomToFrac

Put minus sign in front of fraction

- 4/10

Write as a decimal

-0.4

Subchapter links

Lesson Check p.549

Practice and Problem-Solving Exercises p.550-552

Standardized Test Prep p.552

Mixed Review p.552