Question

What is an equation of the line that is parallel to y = 9 – 5x and passes through (0, 8)?
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Answer 1

y = 8 - 5x

Explanation:

both equations shares the same gradient as they are parallel

from y= 9-5x, the gradient is -5

subst x = 0, y=8, and m= -5 into the y = mx + c to find the value of c

8 = (-5)(0) + c

c= 8

therefore the eqn is y = 8 - 5x