Question

How do you write the equation of a line which has a y-intercept of 24 and a rate of change of 15?

Answer 1

`y = 15x + 24`

Explanation:

`y = mx + b` is the equation of a line in the y intercept form.

`b->y_("intercept")`

m = the slope or the rate of increase. ( think mountain slope)

in this case b = 24 `-> y_("intercept")`

`" "`m = 15 the rate of increase for y for a change of 1 in `x`

so `y = 15x + 24`