Friday

April 25, 2014

April 25, 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.

**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- ...

calculus - If a function f is continuous for all x and if f has a relative ...

Alegbra 116 Help Please - why the line x = 4 is a vertical line. Name three ...

Calculus - Find the value of c where the line l tangent to the graph of y=2.5*5^...

Calculus - Find the value of c where the line l tangent to the graph of y=2.5*5^...

Maths - Points A,B,C are given on circle Γ such that AB=BC. The tangents at...

graphing, math - How do you graph these types of problems. Graph each of the ...

Math (please help steve) - Circles Γ1 and Γ2 have centers X and Y ...

math (please help steve) - Circles Γ1 and Γ2 have centers X and Y ...