What is 40 + 3 rounded to the nearest ten?

40 + 3 = 43.
If the number in the ones place is less than 5, round down, if it is more than 5 round up.
Since the number in the ones place is less than 5, 3, then we would round down and get the number 40.
If we had got for example 47, we would have rounded up to get 50.
So therefore, 40 + 3 rounded to the nearest ten is 40.

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!