Please help!! The graph below represents the linear equation y= 1/2x-3. what is the solution to the system of equations?
(-2,-4), (1,-1), (2,-2), (4,-4).

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Ihave trouble finding the nth term of a linear sequence

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b