Objective: To graph square root functions Lesson 10.1 Objective: To graph square root functions EQ: How do you graph a square root function? Basic form of square root function. Remember that you can’t find the square root of a negative number. Sometimes you may need to use a calculator to round square roots that are not perfect squares.

If x is less than zero, then its undefined. Graph Parent Function X Y 1 2 3 4 9 1 1.4 1.7 2 3 Domain: input x x > 0 If x is less than zero, then its undefined. Range: output y y > 0

Graph Domain: input x x > 0 Range: output y y > 2 2 3 3.4 3.7 4 1 2 3 4 9 2 3 3.4 3.7 4 5   Domain: input x x > 0 Range: output y y > 2

Graph Domain: input x x > -1 Range: output y y > 0 1 1.4 1.7 2 3 1 2 3 8 1 1.4 1.7 2 3   Domain: input x x > -1 Range: output y y > 0

    Domain: input x x > 0 Vertical stretch factor of 2 Range: output y y > 0

Transformation examples.