Line ab contains points a (0, 1) and b (1, 5). the slope of line ab is
−4
negative 1 over 4
1 over 4
4

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

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.

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.