Question

How do you write an equation of a line with slope -5, passes through (2, -3)?

Answer 1

`y=-5x+7`

Explanation:

`y-y_1=m(x-x_1)`

Substitute the y value into `y_1`, the slope's gradient into m, and the x value into `x_1`.
`y+3=-5(x-2)`

Multiply out the bracket.
`y+3=-5x+10`

Take away 3 from both sides.
`y=-5x+7`