Write the equation in slope-intercept form with y intercept of −3 and an x intercept of −4.5. plz tell me how you got it so i now next time !

The equation of the line is y = -2/3x - 3.  

To find this, we first need to turn the intercepts into ordered pairs.  

x intercept: (-4.5, 0)

y intercept: (0, -3)

Now we can use these two points and the slope equation to find slope.

m = (y2 - y1)/(x2 - x1)

m = (0 - -3)/(-4.5 - 0)

m = 3/-4.5

m = -2/3

Now that we have the slope, we can use slope intercept form to find the intercept.  

y = mx + b

-3 = 2/3(0) + b

-3 = 0 + b

-3 = b

Which allows us to model the equation as y = -2/3x - 3