Also, in the slope intercept form, y=mx+b, m is equal to the slope. y2-y1/x2-x1 are the coordinates that you use to figure out the slope. B stands for the y-intercept. Y and x in the slope intercept form are only variables that you plug in from your points on the cortesian coordinate plane.
Contraction joint. c. Construction joint. Out of these Expansion joint and Contraction joints are stress relieving ones while the construction joint is not. Joints can be vertical or horizontal. Vertical joint in a building is at the beam bottom of the column and wall junctions. These joints-Expansion and contraction joints separate the structures and pavements Careful preplanning the location is important for minimum crack free structural members.
Dovetail joints are commonly used to build boxes, drawers, and cabinets. The shape of the tails and pins in the joint make it nearly impossible to break. Glue is used to strengthen the joint but no screws or fasteners are necessary. There are a few different types of dovetail joints, but the most popular is the half-blind dovetail joint (shown in the photo above) and the through dovetail joint. The half-blind version of the dovetail will not show the end grain of the joint from front and is used primarily for drawer faces.