Question

Write an equation of the line in point-slope form, (Y-Y1=M(X-X1)) slope-intercept form (Y=MX+B) and standard form (Ax+By=C where A+B are not both zero) that passes through the given 2 points.
(1,-2) and (1,-3)

(-1,4) and (2,4)

Thank you!!

Answer 1

Formula for slope is y2 - y1 over x2 - x1
Just from looking at the first set of points I know that the slope is 0 or undefined because the line is vertical. There is no y intercept. 
For the second one I know that it is a horizontal line meaning that there is no slope either. It does have a y intercept though.pointslopeform y = 4. Standardform y = 4