Please help me with this question

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.