Question 462176
First find the equation of the line PQ
*[invoke calculating_slope -1, 3, 3, 5]
so using y=.5*x+3.5
or y=x/2+7/2
4y+6x=-2
substitute
4*(x/2+7/2)+6x+2=0
2x+14+6x+2=0
8x+16=0
8x=-16
x=-2
y=x/2+7/2
y=-2*1/2+7/2
y=-1+7/2
y=-2/2+7/2
y=5/2

(-2,5/2)