-10x + y = 4
help i need the steps on how to solve this pls

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Ineed me i stuck and i don’t want to get it wrong