Question

What is the equation of the line that passes through the point (0, 3) and is perpendicular to the line y = 2x + 3?

Answer 1

negative reciprocal of the slope is the perpendicular slope

Answer 2

first of all find the slope of y=2x +3 .... it's 2, this means the perpendicular slope is -1/2
We now got A in y=Ax+b

Going through point 0,3 ... fill in formula; find b=3

Answer 3

so would it be y=-1/2x+3??

Answer 4

Right, assuming the x goes with the numerator,
y=-(1/2)x+3