The points (-16,r) and (-4,11)lie on a line with slope 1/2. Find the missing coordinate r?

As soon as look at the parallelogram abcd shown below: the table below shows the steps to prove that if the quadrilateral abcd is a parallelogram, then its opposite sides are congruent: which choice completes the missing information for reason 5 in the chart? (6 points) congruent parallelograms congruent triangles similar angles similar triangles

Me because some of question i don’t understand

What is x and y intercepts for y=x+7