How do you write the equation of a line through point (4,2); slope = 3?

1 Answer
Dec 8, 2016

y=3x-10y=3x10

Explanation:

The general equation of a straight line is:
" "
y-y_A= a(x-x_A)yyA=a(xxA)
" "
where A(x,y)" "A(x,y) is the point the straight line passes through and
" "
a" "a is the slope.
" "
The equation of the line is:
y-2=3(x-4)y2=3(x4)
" "
y=3x-12+2y=3x12+2
" "
y=3x-10y=3x10