Question

What is the equation of the following line written in general form? (The y-intercept is -1.)

https://media.glynlyon.com/g_alg01_2012/3/80b.gif


2x + y - 1 = 0
-2x - y - 1 = 0
2x - y - 1 = 0


do i just backtrack on these and how ? @texaschic101

Answer 1

general form:

y = mx + b

m is the slope and b is the y intercept.

they tell you the y intercept is -1.

the slope is found by taking any two points (x,y) and

\[m = \frac{ y_2 - y_1 }{ x_2 - x_1 }\]

you an use the points (0,-1) [given y intercept] and (2,3) [easy to spot point]

Answer 2

seems they want you to use (0, -1) and (1,1) [a given point]

Answer 3

look at the graph.....your y axis is -1.....your slope is rise/run...so the slope will be 2/1 or just 2.
y = 2x - 1
the answer choices suggest they moved the y over to the other side.
so subtract y from both sides
0 = 2x - y - 1
I think.....

I originally moved everything over to the y side and got -2x + y + 1 = 0, but that is not a choice.

Answer 4

um i talk to you tmr @texaschic101 i gotta go thanks ill continue with you tmr if your on

Answer 5

c ya then :)