To find the side lengths, you have to factor 4x^2 + 28x + 49. This equation factored is (2x+7)(2x+7), so each side length is (2x+7) feet.
Answer:
slope = -7/4
Step-by-step explanation:
Plug the points into this formula: 
Plug in

The simplest form is -7/4
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Answer:

Step-by-step explanation:
Given



Required

This is calculated as:




Associative property of addition
Answer:
as a vertical line that passes through (-1,0)
Step-by-step explanation:
this line doesn't have a slope nor y-intercept and is parallel to the y-axis. its x-intercept should be (-1,0) and it should continue in both vertical directions from that point, passing through each coordinate pair where x = -1 [(-1,3); (-1,-5); etc]