When we were building our house, there were several things that we used math and geometry for.
Probably not a lot of graphing lines and etc. However, one could imagine especially linear calculations. For example, say you need 1 truck load of wood to build 1 house, how many truck loads of wood to build 3 houses? Or, based on the spacing of boards and etc, one would have to calculate the quantity of decking to cover a whole deck. This often requires calculations of areas, adjusting for odd shapes and angles, waste, and etc.
We would frequently use a "3-4-5 Triangle" to make things square. And there were some tricky calculations to make our roofline correct using rafters and a sloped roof.
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You can use intercept form to graph and write quadratic functions. y=a(x-p)(x-q) You can also use intercept form to graph and write cubic functions. y=a(x-p)(x-q)(x-r)
When you are trying to graph an equation.
This question cannot be answered because there is no graph to tell where the y-intercept is.
Yes
Intercept for a graph are points at which the graph crosses either axis. There is no such thing as an intercept for tables.