Answer
The value of the slope is very low.
Work Step by Step
The value of the slope is close to 0. This happens because the MRI count values are very much higher than the IQ values. For example, in the first observation in the table we have $\frac{MRI~count}{IQ}=\frac{816,932}{133}\approx6000$
Also, the linear correlation coefficient indicates a weak linear relation between MRI count and IQ.
