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#4 C   Domain is x such that x is greater than -1 (all real numbers greater than -1)

#5 B  Points C, F & G

Step-by-step explanation: Look at the coordinate of the vertex. It is at (-1, 1)  so the -1 is the lowest number in the Domain (running left to right). The attows at the right ends mean that the lines go to infinity. The symbol ∈ means "belongs to" the R (special font not available here) means "all real numbers.

The y-value, 1 is not relevant here, as the Range (up and down, like a mountain range) is infinity, and the arrows keep going forever. ∈R  means all real numbers.

For the Triangle: First ,imagine a box with the boundaries matching the domain and range given, so the left side is at -2, the right side is at 6 [Domain] and the  top and bottom are at 5 and -1 [Range]

Pick the points that are on the boundary lines.  C is at (6,3) on the right boundary, F is at (2,-1) on the bottom boundary and G is at (-2,5) at the corner where the top and left sides meet.

See the attachment below

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step-by-step explanation: