Homework Help: algebra 3

Posted by Darius Graham on Thursday, January 11, 2007 at 7:13pm.

what is the equation of the line that passes through {negative 4, negative 1}and {0,7}?
A.Y=2X PLUS 9
B. Y=X/2 PLUS 7
C. 2X PLUS 7
D. Y= NEGATIVE 2X PLUS 7

Here's a way to approach your problem.

'm' represents slope.
'b' the y-intercept.

m = (y2 - y1)/(x2 - x1)

m = [7 - (- 1)]/[0 - (-4)]

m = 8/4 = 2

Now you can find 'b' using the first ordered pair (-4, -1).

[y - (-1)]/[x - (-4)] = 2

(y + 1)/(x + 4) = 2

y + 1 = 2(x + 4)

Can you take it from here to finish?

I hope this will help.

graPH EACH EQUATION- INDICATE ONTHE GRAPH THE X-INTERCEPT AND THE Y INTERCEPT

Y=-4

No one has answered this question yet.

Answer this Question

Related Questions

math - dentify the line that contains the error in this solution and correct the...
algebra 3 - what is the equation of the line with {3,3} and is perpendicular to ...
algebra again - Write an equation that passes through the points (4, 3) and (2...
precalc - I;m not sure if i am doing this right...I keep getting a negative ...
algebra 2 - Simplify the rational expression. numerator 3 x to the 2 power plus ...
Algebra II - Can you make sure my Algebra II work is correct? I've done the ...
MATH - WHAT IS THE TENTH DIDGIT IN THE QUOTIENT 120 / 11? A. 0 B. 1 C. 8 D.9 I ...
Algebra 1 - Write the equation in standard form for the line that passes through...
mat 101 - Equation for a line that passes through (6,26) and has a slope of 3 ...
math - write the equation 5x plus y equals 2 which equals 0 in normal form. my ...

For Further Reading

First Name:
School Subject:
Answer: