college algebra help 10

Can someone help answer these questions and explain how you got them. I am lost.

1. Write the standard form of the equation of the circle with center (5, -7) and radius 5.

2.Identify any intercepts and test for symmetry. Then sketch the graph of the equation.

y equals x squared minus 4 x

3.Determine whether the equation -6(x+3)=-6x-18 is an identity, contradiction, or conditional equation. If conditional, indicate the condition. Explain your reasoning.

4.A room is 2.5 as long as it is wide, and its perimeter is 15 meters. Write l in terms of w and write an equation for the perimeter in terms of w.

5.Find the slope and y-intercept (if possible) of the equation of the line. Select the correct answer for the line.

3x-5=0

6.Find the value of y that corresponds to x = -4 in the graph of the equation 2x+3y=13.

7.x over 8 minus x over 2 equals 6 plus fraction numerator 6 x over denominator 16 end fraction Solve the equation

8.Find the slope-intercept form of the equation of the line that passes through the given point and has the indicated slope m. Select the correct answer for the line. P left parenthesis minus 7 comma space 6 right parenthesis comma space m equals minus 3

9.Determine whether the lines are parallel, perpendicular, or neither. Explain your reasoning. y equals 1 third x minus 4 y equals 1 third x minus 3

10.The graph shows the average salaries for senior high school principals from 1996 through 2008.

Find the slope of the line segment connecting the points for the years 1998 – 2002. average salaries for senior high school principles

11.Assume that the graph has y-symmetry. Select the complete graph of the equation. graph of equation

12. Write the slope-intercept form of the equation of the line through the given point perpendicular to the given line.

point: (-4, 9)

line: 6x – 30y = 6

 
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