Need
a line goes through the points (8,9) and (-2,4)
(a) what is the slope of the line? show your work
(b) write the equation of the line in point-slope form. show your work
(c) write the equation of the line in slope-intercept form. show your work.

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

10x − 5y + 14 = 0 whats the answer pls