Question

What is the equation of the line in slope-intercept form? the line perpendicular to y =1/3x + 5 through (2, 1)

Answer 1

A. y = 1/3x + 7
B. y = -3x + 7

C. y = 3x + 7
D. y = -1/3x + 7

Answer 2

D?

Answer 3

nvm

Answer 4

1. Find the slope of the perpendicular line
(The product of the slopes of lines perpendicular to each other is -1)

2. Insert the slope of the perpendicular line along with the point (2,-1) into y = mx + b
3. Solve for b:
4. Rewrite the point-slope formula of the perpendicular line, but include only the values of m and b

Answer 5

A?

Answer 6

@Hero is A correct

Answer 7

no

Answer 8

@AriPotta then im screwed cause idk the answer

Answer 9

perpendicular lines have negative reciprocal slopes. so if the one line has a slope of 1/3, what must be the slope of the perpendicular line?

Answer 10

-1/3

Answer 11

no. it would be -3

Answer 12

ok whatever

Answer 13

so the answer would be b. and it's not "whatever" if you're really trying to understand :/