Me brainfams!

which equation does the graph below represent? (picture below)

y = x
y = −3x
y = 3x
y = x

Point e(−5, 3) and point d(−4, −3) are located on the grid. which measurement is closest to the distance between point e and point d in units? a) 6.1 units b) 6.3 units c) 6.5 units d) 6.7 units

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left