Precalculus check answers help!
posted by Kelsey .
7.) Write the equation 3x + 4y – 7 = 0 in normal form.
3/5x + 4/5y + 7/5 = 0
3/5x  4/5y  7/5 = 0
3/5x  4/5y + 7/5 = 0 ~
3/5x + 4/5y  7/5 = 0
8.)Write the standard form of the equation of a line for which the length of the normal is 4 and the normal makes an angle of 45° with the positive x–axis.
sqrt2x + sqrt2y +8 = 0
2x + 2y – 8 = 0
sqrt2x + sqrt2y 8 = 0 ~
2x + 2y + 8 = 0
9.) Write the standard form of the equation of a line for which the length of the normal is 3 and the normal makes an angle of 135° with the positive x–axis.
sqrt2^x – sqrt2y + 6 = 0 ~
sqrt2^x + sqrt2y  6 = 0
sqrt2^x – sqrt2y  6 = 0
sqrt2^x + sqrt2y + 6 = 0
10.) Find the distance between P (–2, 1) and the line with equation x – 2y + 4 = 0.
4sqrt5/5
0 ~
4sqrt5/5
5/4

Precalculus check answers help! 
Reiny
I agree with all your answers
Respond to this Question
Similar Questions

algebra
1. write an equation of the line that passes through the point and has the given slope. write the equation in slopeintercept form. a. (3,2), m=1/2 b. (3,2), m=1/2 _______ answers: a. y=1/2x + 1/2 b. y=1/2x + 7/2 ______________________________________ … 
algebra[please check]
in questions 1 and 2, write an equation of the line in slopeintercept form. 1. the slope is 4/3; the yintercept is 2. 2. the slope is 0; the yintercept is 5. my answers: 1.y=4/32 2. y=5 ______________________ write an equation … 
Math  Equations of plane(check)
Consider the plane that contains points A(2,3,1), B(11,1,2), C(7,3,6). a) Find two vectors that are parallel to the plane. Ans: AC, BC or AB will be parallel to the plane. b) Find two vectors that are perpendicular to the plane. … 
Math  Equations of plane(check)
Consider the plane that contains points A(2,3,1), B(11,1,2), C(7,3,6). a) Find two vectors that are parallel to the plane. Ans: AC, BC or AB will be parallel to the plane. b) Find two vectors that are perpendicular to the plane. … 
Precalculus check answers help!
1. Which expression is equivalent to cos 2theta for all values of theta ? 
precalculus
Let z1= 33sqrt 3i and z2= 11+i. write all answers in polar form with 0< theta< 2pi A. what is z1 in polar form? 
geometry
I would love for someone to check my work on the seven problems that I did. I would be eternally grateful. I am going to list my problems and answers. Even if you only want to check one of them, that would be great. 1. Write an equation … 
math
sorry, but one more question... there are a couple questions that say something like write the equation 2x+3y5=0 in normal form... but isnt it already in normal form? 
precalculus
please check my answers 1.Use Gaussian elimination to write the system of equations given below in rowechelon form. 2x+4y+z=4 2x4y+6z=13 4x2y+z=6 answer:2x+4y+z=4 8y5z=17 z=1 2.Find the solution to the system of equations given … 
Math
1. Find the slope of the line that passes through the points (1, 2), (0, 5). 2. Suppose y varies directly with x, and y = 15 and x = 5. Write a direct variation equation that relates x and y. What is the value of y when x = 9?