Question

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

Answer 1

`y=3x-10`

Explanation:

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