Answer
No solution
Work Step by Step
Given:
$y=1.5x+2$
The slope is $1.5$; the y-intercept is $2$.
$4.5x-3y=-9 \rightarrow 3y=4.5x+9 \rightarrow y=1.5x+3$
The slope is $1.5$; the y-intercept is $3$.
The two parallel lines will never have an intersection. Hence, there is no solution for this system.