The equation of line CD is y = 3x − 3. Write an equation of a line perpendicular to line CD in slope-intercept form that contains point (3, 1).

y = 3x + 0

y = −3x − 8

y = negative 1 over 3x + 2

y = − 1 over 3x + 0

Question

The equation of line CD is y = 3x − 3. Write an equation of a line perpendicular to line CD in slope-intercept form that contains point (3, 1).

 y = 3x + 0

 y = −3x − 8

 y = negative 1 over 3x + 2

 y = − 1 over 3x + 0

xapproachesinfinity · Answer

The perpendicular should be with slope -1 /3 use that with the point they gave you to find the equation

xapproachesinfinity · Answer

Use point slope form

triciaal · Answer

CD y = 3x -3  slope = 3
perpendicular lines  the product of the slope = -1
slope of line perpendicular to CD = -1/3
line passes through (3, 1) and (x, y)
y - 1 = -1/3(x-3)
y = -1/3*x -1/3*(-3) + 1
simplify and match with answer choices

triciaal · Answer

you should get choice c

xapproachesinfinity · Answer

I was motivating him to do it by himself so he can do  easily with any other assignments