Error Analysis
Completing the Square
Robbie solved x² + 12x + 7 = 0 using the completing the
square method. His work is shown below. is his method
correct? If not, explain and correct his error. You must
show and explain your work in order to receive credit!
Your work
Robbie's work
x + 12x = 7
x + 12x + 36 = 7
VOX+6)= 7
X + 6 = 117
Robbie's answer is 6 v7
What mistakes did Robbie make? And solve the equation.

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

step-by-step explanation:

1 1/5

step-by-step explanation: