a=

b=

c=

b: 3
c: 3
a: -2
InputBox1 = Textfield(a)
InputBox2 = Textfield(b)
InputBox3 = Textfield(c)
f: (a * x) + (b * y) = c
P = (-5, 8)
text1: "" + (LaTeX[P]) + ""
p: (a * x(P)) + (b * y(P))
text2: "" + (LaTeX[a]) + "x+" + (LaTeX[b]) + "y=" + (LaTeX[p]) + ""
text3: "" + (LaTeX[a]) + "x+" + (LaTeX[b]) + "y=" + (LaTeX[c]) + ""