Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 225
- Website

If y = f(x) is a linear function, then increasing x by 1 unit changes the corresponding y by m units, where m is the slope.

that's, True. Suppose we start at x = x1 and increase x by 1 unit to x1 + 1. If y = b + mx, the corresponding values of y are b + mx1 and b + m(x1 + 1). Thus y increases by

∆y = b + m(x1 + 1)−(b + mx1) = m.

why I find this hard to understand?

*Last edited by Hannibal lecter (2018-02-22 07:12:48)*

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,462

Try drawing a diagram. I think this will show you what is happening.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob Bundy

Offline

**iamaditya****Member**- From: Planet Mars
- Registered: 2016-11-15
- Posts: 808

You can use Desmos Graphing Calculator to learn about it, the best graphing calculator as far as I know. It contains a lots and lots of features, to help you learn graphs.

Practice makes a man perfect.

There is no substitute to hard work

All of us do not have equal talents but everybody has equal oppurtunities to build their talents.-APJ Abdul Kalam

Offline

Pages: **1**