Question

What is an equation of the line that is parallel to y=4x−10 and passes through (1, 13) ?

Answer 1

If a line is parallel to another line,Then the gradients are the same.So m=4 .Using general formula for str8 line, y=mx+c
$y = 4x + c$
sub in coorfinates (1,13)
$13 = 4 + c$
So C=9.
$y = 4x + 9$