SOLUTION: write an equation of a line that passes through the point (8,2) that is (a) parallel and (b) perpendicular to the graph of the equation y=4x - 3

Algebra ->  Linear-equations -> SOLUTION: write an equation of a line that passes through the point (8,2) that is (a) parallel and (b) perpendicular to the graph of the equation y=4x - 3      Log On


   

Question 997886: write an equation of a line that passes through the point (8,2) that is (a) parallel and (b) perpendicular to the graph of the equation y=4x - 3
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The perpendicular line:
y=-%281%2F4%29x%2Bb
b=2-%28-1%2F4%29%2A8

For parallel, the slopes of the lines are equal. For perpendicular, one slope is negative reciprocal of the other slope.

Slope-Intercept Form,
y=mx%2Bb
y-mx=b
b=y-mx------solved for b, the y-intercept