Question

Please help me

Given the following linear equation, calculate line perpendicular to it that passes through the listed coordinate point: y = 5x - 8 ; (0,4)


A.y = -5x + 4


B.y = -1/5x + 4/5


C.y = -1/5x + 4


D.y = -5x + 4/5

Answer 1

The slope of a perpendicular line is the opposite reciprocal of the original line. In this case, the slope would be -1/5. Now to figure out which point is passed through. As C clearly indicates it passes through (0,4) that is the correct answer.

Answer 2

Since you know the line is perpendicular the slope will be the negative reciprocal (-1/5). The line must have a slope of (-1/5) and go through the point (0,4). As you can see below the answer is C
\[4=(-1/5)(0)+b\]

Answer 3

thank you both