Shapes are said to be similar if we can turn one into the other by moving, rotating, flipping, or scaling (or dilating), which means making it bigger or smaller, kind of zooming in or out. In the figure below, we have two right triangles that are similar to each other. So they share the same angles and their corresponding sides are proportional. This proportion can be found by the ratio that is a fraction that tells us how many times longer a thing is compared to another thing.
Finally, this can be a SIMILARITY SENTENCE:
<em>These two triangles are similar because you can turn one into the other by moving and scaling and the </em><em>ratio</em><em> is </em><em>r = 2, </em><em>So the triangle on the right is two times bigger the triangle on the left.</em>
So we are given that the line passes through (3,-1) also been given the parallel line, we can tell that the slope is -4 to make a slope intercept form equation... y = -4x +11