Help I don’t really understand sloped so any help would be helpful.

The slope is -2.

Step-by-step explanation:

Since the line is going through the origin it means that if you find a point on the line and divided the y coordinate of point by it's x coordinate then you will get the slope or the constant change value.

The equation of a proportional line says that  y = kx  where k is the slope.

And to find k, you will divide y by x.

One point that is located on the line is  (-1,2)  The y coordinate is 2 and the x coordinate is -1.

Divide 2 by -1 to find the slope.

2/-1= -2  

This means the slope is -2.

4 appears 55 times between 100 and 350

Step-by-step explanation:

First lets compute the number of times 4 appear from 100 to 200

104, 114, 124, 134, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 154, 164, 174, 184, 194

From 100 to 200: 4 appears 20 times 1

Using the same method as above:

From 200 to 300: 4 appears 20 times 2

From 300 to 350: 4 appears 15 times 3

304, 314, 324, 334, 340, 341, 342, 343, 344 ( 2 times ), 345, 346, 347, 348, 349

From eq 1, 2 and 3

From 200 to 350: 4 appears : 20 + 20 + 15 = 55 times