Question

The graph of a linear relationship passes through (0, 3), and (3, 9). Which is an equation for this linear relationship?

Answer 1

Explanation:

1. First calculate for the gradient m

2. Calculate for the constant C by using any point (0,3) or (3,9)

3. Lastly, put the values found in the equation y = mx + c

1. m = Y2-Y1/X2-X1

=9-3/3-0=2

2. input one point together with m into the equation y=mx+c

3=2(0)+C

C=3

3. Therefore equation of linear relationship is

y = 2x + 3

Answer 2

I think it’s 2x + 0 but I would double check