Question

3. Given 4x − 8y = 8: (a) Transform the equation into slope-intercept form. (b) Find the slope and y-intercept of the line. (c) Find the equation, in point-slope form, of the line that is perpendicular to this line and passes through the point .

Answer 1

4x - 8y = 8
4x - 8 = 8y
y = 1/2x - 1 slope = 1/2 y intercept = -1

Perpendicular slope is negative reciprocal so 1/2 becomes -2

Perpendicular line formula is y = -2x - 1