write and equation for the line that passes thruough (0,7) and is perpendicular to the line equation y=1/2x-1?

Question

show ur work

Answer 1

(0,7) is the y-intercept. b = 7
a line perpendicular to y=(1/2)x -1 has slope (m) of (-1)/(1/2), or -2

y=mx+b
y=-2x+7

Answer 2

Slopes of perpendicular lines are negative inverses.So the slope is m=-2
As it passes through (0,7) the intercept is n=7

y=-2x+7 is the equation you are looking for

Answer 3

The slope of the perpendicular line to the line y=ax+b is: -1/a
So the slope of perpendicular line to y=1/2x-1 is: -2
And as far as it passes the point 7 on y-axis then the equation would be like:
y=-2x+7