Thursday

October 30, 2014

October 30, 2014

Posted by **Anonymous** on Monday, January 23, 2012 at 10:15pm.

A. Find the equation of the line.

B. Find the measure of the angle that the line makes with the x-axis.

- Math -
**Reiny**, Monday, January 23, 2012 at 10:51pmwhen x=-4, y = 16

when x = 2, y = 4

two intersection points are (-4,16) and (2,4)

slope = (4-16)/(2+4) = -12/6 = -2

equation of line:

y = -2x + b, but (2,4) lies on it, so

4 = -4 + b

b = 8

equation of line:

y = -2x + 8

a line with a slope of -2 makes and angle of

tan^-1 (-2) or 116.565°

check: tan 116.565 = -2

- Math -
**Algebra88**, Monday, January 23, 2012 at 11:35pmThank you very very much, I really appreciate this.

**Answer this Question**

**Related Questions**

Algebra - A line intersects the graph of y= x^2 twice. One point has an x- ...

Algebra - A line intersects the graph of y= x^2 twice. One point has an x- ...

Geometry - In the standard (x,y) coordinate plane, if the x-coordinate of each ...

math - A,B are two points on a given line L.L is the midpoint of the section AB...

math - A,B,C are points on the line L, the coordinate of B=-2, c is a point that...

College Math - 2008 (2nd)Course2-4.1 We are to find a function f(x) such that ...

Calculus-Applied Optimization Problem: - Find the point on the line 6x + 3y-3 =...

Calc - Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find ...

Calc - Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find ...

calc - let f be function given by f(x)= Ln(x)/x for all x> 0. the dervative ...