Question

Find an equation for L in the form y=mx+c

Answer 1

The answer is y= 2x+1 because u have to find out the gradient and y-intercept

Answer 2

Y=3x-2

Explanation:

(1,1) (2,4)

You can find the slope by using this table:

1 1

1 3

2 4

(its 2-1 and 4-3)

so the slope is 3/1 (y over x)

Then to find they intercept you can use point slope

pick a random point and set it up like this:

y-y cord = slope (x- x cord)

y-1 = 3/1 (x-1)

then simplify 3/1 (3)

y-1=3(x-1)

then distribute but just to the x cord and not the x

so you get:

y-1=-3

then solve it like you would any equation:

y - 1 = -3

+1 +1

So the y intercept is:

-2

Then set it up how you normally would

y=mx-c

Y=3x-2