The slope is 1.5x
Per x value increase, the y value increases by 1.5.
This mean that if x is 2, the y value will be 3 higher than the y-intercept.
We can use the slope formula to verify this.
![(y.2 - y.1)/(x.2 - x.1) = m](https://img.qammunity.org/2019/formulas/mathematics/high-school/qdukblwrk5wxm4otk0x6eovjn1h8jqe33u.png)
6 - 4.5 / 0 + 1
1.5/1 = 1.5
This line in slope-intercept form would look like this:
y = 1.5x + 6