# 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. 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. 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. 9.Determine whether the lines are parallel, perpendicular, or neither. Explain your reasoning.  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. 11.Assume that the graph has y-symmetry. Select the complete graph of the 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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