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Solve each equation. Check!!

1.

-42

-6

7

1

42 – x

x2 =

(x – 6)(x + 7) = 0

-42 + x -42 + x

x – 6 = 0

x + 7 = 0

x2 + x – 42 = 0

x = 6

x = -7

Solve each equation. Check!!

2.

-6

2

-3

-1

x + 6

x2 =

(x + 2)(x – 3) = 0

-x – 6 -x – 6

x + 2 = 0

x – 3 = 0

x2 – x – 6 = 0

x = -2

x = 3

Solve each equation. Check!!

3.

2

-1

-2

-3

3x – 2

x2 =

(x – 1)(x – 2) = 0

-3x + 2 -3x + 2

x – 1 = 0

x – 2 = 0

x2 – 3x + 2 = 0

x = 1

x = 2

Solve each equation. Check!!

4.

1

-1

-1

-2

-1 + 2x

x2 =

(x – 1)(x – 1) = 0

+1 – 2x +1 – 2x

x – 1 = 0

x – 1 = 0

x2 – 2x + 1 = 0

x = 1

x = 1

Section 10.5

Graphing Square Root Functions

Standards: 17.0

Objective: I will graph square root functions by making a table of values.

Remember: Square roots can’t be negative.

Make the radicand greater than or equal to 0.

Solve that inequality.

Find the domain (make the radicand > 0 and solve for x).

Make a table of values. Use the value of x found in #1.

Find at least five points.

Plot your points.

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