Question

Find the standard form of the equation of the line that passes through the points (-1,-1) and (3,4)

Answer 1

Did you find the slope of the line?

Answer 2

no

Answer 3

Do you know the formula for the slope?

Answer 4

x1-y2 X2 -Y2 ?

Answer 5

y1

Answer 6

Not quite.
\[Slope =\frac{\text{Change in y}}{\text{Change in x}} = \frac{y_2-y_1}{x_2-x_1}\]

Answer 7

so the slope is 3/5?

Answer 8

5/4

Answer 9

\[\frac{4-(-1)}{3-(-1)}\]

Answer 10

so then what is my standard form equation?

Answer 11

Once you have the slope, you can plug that into the point slope formula.

\[y-y_1 = M(x-x_1)\]

Where M is the slope.

Answer 12

And \(x_1,y_1\) are the x and y values of a point on the line (you can pick either point for this)

Answer 13

i give up

Answer 14

Why? You were doing fine so far.

Answer 15

You found M = 5/4

Answer 16

You are given the x and y values for 2 points, just pick one and plug them in.