To solve a system of equations by substitution what is the best first step

What is the domain of the relation described by the set of ordered pairs { (-2, 8), (-1, 1), (0, 0), (3, 5), (4, - 2) }? {-2, 0, 1, 5, 8} {-2, - 1, 0, 4, 5} {-2, - 1, 0, 1, 5} {-2, - 1, 0, 3, 4}

What does negative correlation mean about the data? A) As one value increases, the other value decreases. B) As one value increases, the other value stays the exact same C) As one value increases, the other value increases as well.

How do I do a horizontal number line to represent the set of even negative numbers from - 9 to - 1

Equation of a parallel line to y=7/4x-6

Sebastian swam laps everyday in the community swimming pool. he swam for 45 minutes everyday, 5 days each week, for 12 weeks. in that time he swam 1,800 laps. what was his average rate in laps per hour? what do i do? how do i show work?

A Ferris wheel travels in a circular motion and measures 40 meters from the top car to the bottom car. What is the length of the radius of the Ferris wheel

What is factorisation and how do you do it?

Factor the expression 28r + 42s - 35

Find the slope and y-intercept for 2x+8y=-32 and then graph the line

Base systems like binary and hexadecimal seem a bit strange at first. The key is understanding how different systems "tick over" like an odometer when they are full.