Question

Write the equation of a line that passes through the point (1,-3) and is parallel to the line 7x + y = -5.

Answer 1

first of all, parallel lines will have the same slope. So we need to find the slope of 7x + y = -5. Do you know how to find the slope of this line ?

Answer 2

m=-7

Answer 3

right.....slope is -7...parallel lines will have same slope
now we will use y = mx + b
slope (m) = -7
(1,-3)....x = 1 and y = -3
we have both the slope and our points, so we basically need to find b, the y intercept.
y = mx + b
-3 = -7(1) + b
-3 = -7 + b
-3 + 7 = b
4 = b

therefore, our parallel line is : y = -7x + 4
questions ?

Answer 4

thanks (:

Answer 5

anytime :)