Question

Which of the following functions is best represented by the scatter plot?
1) f(x) = 9 − 10.3x

2) f(x) = −10.3 + 9x

3) f(x) = −9 + 10.3x

4) f(x) = 10.3 − 9x

Answer 1

The scatter plot below shows the relationship between the length (x), in meters, and mass f(x), in kg, of a marine animal:

Answer 2

Note the equations are y = mx+b form, and it's increasing so we can eliminate both equations with negative slopes. Slope in this equation is represented by m, and y - intercept is b.

Answer 3

You can find the slope or use intercepts to find the equation, for slope pick two random points on the line and use \[ m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\] or you can find x and y intercept and compare it to the graph.
To find x intercept, let y = 0 and solve for x, to find y intercept, let x = 0 and solve for y.

Answer 4

Thanks @Elsa213 I was unable to msg you back because of your settings :-)

Answer 5

the answer its A?

Answer 6

No, please read what I said first

Answer 7

I dont understand >.< I'm really bad with this