Question

How do I find the y-intercept and slope ?

Answer 1

Slope-intercept form:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

You need to find "m" and "b".

In the table, when x = 0, y is 0, so the y-intercept is 0

y = mx + 0    or    y = mx

To find "m", you can use the slope formula and plug in 2 points:

(0,0) and (1, 3)

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m=\frac{3-0}{1-0}$

m = 3

Slope: 3

y-intercept: 0

Equation: y = 3x