Wednesday

July 23, 2014

July 23, 2014

Posted by **erika** on Monday, October 26, 2009 at 9:40pm.

- algebra -
**Reiny**, Monday, October 26, 2009 at 10:21pmfor the x-inercept let y = 0

0 = (2/3)x + 6

0 = 2x + 18

x = -9

if you want to re-arrange the equation so that the x-intercept can be read, like the b in y=mx + b is the y-intercept, solve the equation for x

y = (2/3)x + 6

3y = 2x + 18

2x = 3y - 18

x = (3/2)y - 9

notice that the constant at the end is the x-intercept, just like the b in y = mx +b was the y-intercept,

BUT, notice that the number in front of y is NOT the slope, instead it is the reciprocal of the slope.

**Related Questions**

algebra 1 - how do you know when the line crosses the y axis while doing y ...

Algebra 2 - Write an equation in slope-interept for, for the lnie that satisfies...

algebra - 1. Explain the concept of modeling. How does a model describe known ...

Algebra - Owners of a recreation area are filling a small pond with water. They...

Algebra- I get 1 out of two parts - Owners of a recreation area are filling a ...

physics - Graph #1 is a parabola. Graph #2 is a hyperbola. a. Only graph 1 may ...

algebra - Which graph best represent following expression|x-1|>2

algebra - What are the pairs of numbers on a graph which represent the equation ...

Physics - The pressure and volume of a gas are changed along a path ABCA in the ...

physics - The first graph you plotted is called a speed-time graph. However, ...