3.. Please help. What description shows that lines l and m have slopes that are opposite reciprocals?

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?